Kiểm tra Hình học 8 - Chương I - Năm học: 2016 - 2017

KIỂM TRA HÌNH HỌC 8 CHƯƠNG I
NĂM HỌC: 2016-2017
Thời gian làm bài 45 phút
Bài 1 (2,0 điểm): Nêu tính chất và dấu hiệu nhận biết HÌNH BÌNH HÀNH ?
Bài 2 (3,0 điểm). 
a, Cho hình thang ABCD (AB//CD) có AB = 12cm, CD= 24cm. Tính độ dài đường trung bình MN của hình thang?
b, Cho tam giác ABC có Â = 900, AB= 15cm, AB = 20cm. Tính độ dài đường trung tuyến AM của tam giác? 
Bài 3 (5 điểm). 
 Cho hình bình hành ABCD. Gọi O là giao điểm của hai đường chéo AC và BD. Trên AB lấy điểm E, trên CD lấy điểm F sao cho AE = CF.
	a) Chứng minh: .
	b) Chứng minh: E và F đối xứng nhau qua O.
	c) Từ E dựng Ex // AC cắt BC tại I, dựng Fy // AC cắt AD tại K. Chứng minh rằng: Tứ giác là hình bình hành
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