Kiểm tra môn Hình học 8 - Trường THCS Đại Hoá
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<span class='text_page_counter'>(1)</span>Trường THCS Đại Hoá Líp: ..................................................................................... Hä vµ tªn:........................................................................ §Ò sè: 1. KiÓm tra m«n h×nh häc 8 Thời gian: 45 phút (không kể thời gian giao đề). §iÓm. NhËn xÐt. PhÇn I. Tr¾c nghiÖm (3 §iÓm) Hãy điền từ đúng(Đ), sai(S) vào cột tương ứng với các khẳng định sau đây? a. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh thoi. b. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau t¹i trung ®iÓm mçi ®êng lµ h×nh thoi c. H×nh thoi lµ tø gi¸c cã tÊt c¶ c¸c gãc b»ng nhau. d. H×nh ch÷ nhËt cã hai ®êng chÐo b»ng nhau lµ h×nh vu«ng. e. H×nh ch÷ nhËt cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh vu«ng f. H×nh vu«ng võa lµ h×nh ch÷ nhËt, võa lµ h×nh thoi PhÇn II. Tù luËn (7 §iÓm) Cho tam gi¸c ABC, trªn BC lÊy ®iÓm D, kÎ DG song song víi AC (G n»m trªn AB), kÎ DH song song víi AB (H n»m trªn AC) a. Tø gi¸c AHDG lµ h×nh g×? v× sao? b. Khi tia ph©n gi¸c Ax c¾t BC t¹i D, tø gi¸c AHDG lµ g×? v× sao? c. Khi gãcA vu«ng th× tø gi¸c AHDG lµ h×nh g×? V× sao? d. Tìm điều kiện để tứ giác AGDH là hình vuông? Bµi lµm ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................. Lop8.net.
<span class='text_page_counter'>(2)</span> Trường THCS Đại Hoá Líp: ..................................................................................... Hä vµ tªn:........................................................................ §Ò sè: 2. KiÓm tra m«n h×nh häc 8 Thời gian: 45 phút (không kể thời gian giao đề). §iÓm. NhËn xÐt. PhÇn I. Tr¾c nghiÖm (3 §iÓm) Hãy điền từ đúng(Đ), sai(S) vào cột tương ứng với các khẳng định sau đây? a. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau t¹i trung ®iÓm mçi ®êng lµ h×nh thoi b. Tø gi¸c cã hai ®êng chÐo b»ng nhau lµ h×nh thoi. c. H×nh vu«ng võa lµ h×nh ch÷ nhËt, võa lµ h×nh thoi d. H×nh ch÷ nhËt cã hai ®êng chÐo b»ng nhau lµ h×nh vu«ng. e. H×nh ch÷ nhËt cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh vu«ng f. H×nh thoi lµ tø gi¸c cã tÊt c¶ c¸c gãc b»ng nhau. PhÇn II. Tù luËn (7 §iÓm) Cho tam gi¸c ABC, trªn AC lÊy ®iÓm D, kÎ DG song song víi AB (G n»m trªn BC), kÎ DH song song víi BC (H n»m trªn AB) a. Tø gi¸c ADGH lµ h×nh g×? v× sao? b. Khi tia ph©n gi¸c Bx c¾t AC t¹i D, tø gi¸c ADGH lµ g×? v× sao? c. Khi gãcB vu«ng th× tø gi¸c ADGH lµ h×nh g×? V× sao? d. Tìm điều kiện để tứ giác ADGH là hình vuông? Bµi lµm ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................. Lop8.net.
<span class='text_page_counter'>(3)</span> Trường THCS Đại Hoá Líp: ..................................................................................... Hä vµ tªn:........................................................................ §Ò sè: 3. KiÓm tra m«n h×nh häc 8 Thời gian: 45 phút (không kể thời gian giao đề). §iÓm. NhËn xÐt. PhÇn I. Tr¾c nghiÖm (3 §iÓm) Hãy điền từ đúng(Đ), sai(S) vào cột tương ứng với các khẳng định sau đây? a. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh thoi. b. Hình thoi là tứ giác có các góc đối bằng nhau. c. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau t¹i trung ®iÓm mçi ®êng lµ h×nh thoi d. H×nh ch÷ nhËt cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh vu«ng e. H×nh ch÷ nhËt cã hai ®êng chÐo b»ng nhau lµ h×nh vu«ng. f. H×nh vu«ng võa lµ h×nh ch÷ nhËt, võa lµ h×nh thoi PhÇn II. Tù luËn (7 §iÓm) Cho tam gi¸c ABC, trªn AB lÊy ®iÓm D, kÎ DG song song víi AC (G n»m trªn BC), kÎ DH song song víi BC (H n»m trªn AC) a. Tø gi¸c ADGH lµ h×nh g×? v× sao? b. Khi tia ph©n gi¸c Cx c¾t AB t¹i D, tø gi¸c ADGH lµ g×? v× sao? c. Khi gãcC vu«ng th× tø gi¸c ADGH lµ h×nh g×? V× sao? d. Tìm điều kiện để tứ giác ADGH là hình vuông? Bµi lµm ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................. Lop8.net.
<span class='text_page_counter'>(4)</span> Trường THCS Đại Hoá Líp: ..................................................................................... Hä vµ tªn:........................................................................ §Ò sè: 4. KiÓm tra m«n h×nh häc 8 Thời gian: 45 phút (không kể thời gian giao đề). §iÓm. NhËn xÐt. PhÇn I. Tr¾c nghiÖm (3 §iÓm) Hãy điền từ đúng(Đ), sai(S) vào cột tương ứng với các khẳng định sau đây? a. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh thoi. b. H×nh thoi lµ tø gi¸c cã tÊt c¶ c¸c gãc b»ng nhau. c. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau t¹i trung ®iÓm mçi ®êng lµ h×nh thoi d. H×nh vu«ng võa lµ h×nh ch÷ nhËt, võa lµ h×nh thoi e. H×nh ch÷ nhËt cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh vu«ng f. H×nh b×nh hµnh cã hai ®êng chÐo b»ng nhau lµ h×nh vu«ng. PhÇn II. Tù luËn (7 §iÓm) Cho tam gi¸c ABC, trªn AC lÊy ®iÓm D, kÎ DG song song víi AB (G n»m trªn BC), kÎ DH song song víi BC (H n»m trªn AB) e. Tø gi¸c ADGH lµ h×nh g×? v× sao? f. Khi tia ph©n gi¸c Bx c¾t AC t¹i D, tø gi¸c ADGH lµ g×? v× sao? g. Khi gãcB vu«ng th× tø gi¸c ADGH lµ h×nh g×? V× sao? h. Tìm điều kiện để tứ giác ADGH là hình vuông? Bµi lµm ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................. Lop8.net.
<span class='text_page_counter'>(5)</span> Trường THCS Đại Hoá Líp: ..................................................................................... Hä vµ tªn:........................................................................ §Ò sè: 5. KiÓm tra m«n h×nh häc 8 Thời gian: 45 phút (không kể thời gian giao đề). §iÓm. NhËn xÐt. PhÇn I. Tr¾c nghiÖm (3 §iÓm) Hãy điền từ đúng(Đ), sai(S) vào cột tương ứng với các khẳng định sau đây? a. H×nh ch÷ nhËt cã hai ®êng chÐo b»ng nhau lµ h×nh vu«ng. b. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau t¹i trung ®iÓm mçi ®êng lµ h×nh thoi c. Hình thoi là tứ giác có các góc đối bằng nhau. d. H×nh ch÷ nhËt cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh vu«ng e. Tø gi¸c cã hai ®êng chÐo vu«ng gãc víi nhau lµ h×nh thoi. f. H×nh vu«ng võa lµ h×nh ch÷ nhËt, võa lµ h×nh thoi PhÇn II. Tù luËn (7 §iÓm) Cho tam gi¸c ABC, trªn AC lÊy ®iÓm D, kÎ DG song song víi AB (G n»m trªn BC), kÎ DH song song víi BC (H n»m trªn AB) i. Tø gi¸c ADGH lµ h×nh g×? v× sao? j. Khi tia ph©n gi¸c Bx c¾t AC t¹i D, tø gi¸c ADGH lµ g×? v× sao? k. Khi gãcB vu«ng th× tø gi¸c ADGH lµ h×nh g×? V× sao? l. Tìm điều kiện để tứ giác ADGH là hình vuông? Bµi lµm ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................ ............................................................................................................................................................................................................. Lop8.net.
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