kiem tra c1 hh9
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<span class='text_page_counter'>(1)</span>Trường THCS đạ long Ñieåm Lớp 9A… Hoï Vaø Teân:…………………………………………. Lời Nhận Xét của Giáo Viên. KIEÅM TRA MOÄT TIEÁT Moân : Hình Hoïc 9 Thời gian : 45’ Bài 1: (2,0đ) Cho tam giác MNP vuông tại M, góc N có số đo bằng 35 0. Hãy viết các tỷ số lượng giác của góc 350. Bài 2: (1,0đ) Trên hình 1, tính x =?. Hình 1. Bài 3: (2,0đ) Trên hình 2, tính x = ?; y = ?. Hình 2. Bài 4: (2,0đ) Cho tam giác ABC vuông tại A, biết góc B bằng 600, cạnh góc vuông AC bằng 12cm. Hãy giải tam giác vuông ABC. Bài 5: (3,0đ) Cho tam giác DEF có ED = 6cm, D̂ = 300, F̂ = 580, kẻ đường cao EI của tam giác đó ( I DF ). Hãy tính: a) Đường cao EI. b) Cạnh EF . (cho biết sin 580 0,8 ). BAØI LAØM: ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ............................................................................................................................................................. ..............................................................................................................................................................
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