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thuylinh16102001
2 năm trước
Câu 6: Hãy cho biết mỗi câu sau đây là đúng hay sai? a) Góc có số đo 135° là góc nhọn. b) Góc có số đo 90° là góc bẹt. c) Góc có số đo 180° là góc tù. d) Góc tù nhỏ hơn góc bẹt Bài 7. Cho hình vẽ: a) Hãy kể tên các góc bẹt. b) Hãy kể tên các góc có đỉnh là G. Bài 8 Đổi thành độ, phút: Ví dụ: 12,15 0 = 12 12 30 = 12 0 9' = 729' 23,20 0 = ............ = .............. = ........... 42,75 0 = ............ = .............. = ......... 121,25 0 = ............ = .............. = ........... 68,40 0 = ............ = .............. = ........... 15,25°   = ............ = .............. = ...........   30,5° = ............ = .............. = ........... Bài 9. a) Đo các góc BAE, AEB, BDE, DBC, BCD, CBD, EBC trong hình vẽ. b) So sánh các góc BAE, AED, EDB, ABD, BDC
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