Đề kiểm tra chương 1: Hình học 7
Thời gian :45 phút
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Bài 1(2đ) Hai đường thẳng a,b ở các hình sau co song song với nhau không? vì sao?


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Bài 2(3đ)
Phát biểu định lí được diễn tả bởi hình vẽ sau:
Viết GT,KL dưới dạng kí hiệu của định lí trên.
c) Chứng minh định lí đó.

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Bài 3(2đ)
Cho đoạn thẳng AB = 5cm. Vẽ đường trung trực của AB. Nói rõ cách vẽ.
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Bài 4(3đ)
Cho hình vẽ. Biết a//b, Â = 300Tính số đo góc AOB =?
Nêu rõ tại sao tính được như vậy.








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Đề kiểm tra chương 1: Hình học 7
Thời gian :45 phút
-------------------------------------------------------------------------------------------
Bài 1(2đ) Hai đường thẳng m,n ở các hình sau co song song với nhau không? vì sao?


.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Bài 2(3đ)
Phát biểu định lí được diễn tả bởi hình vẽ sau:
Viết GT,KL dưới dạng kí hiệu của định lí trên.
c) Chứng minh định lí đó.


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Bài 3(2đ)
Cho đoạn thẳng MN = 7cm. Vẽ đường trung trực của MN. Nói rõ cách vẽ.
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Bài 4(3đ)
Cho hình vẽ. Biết x//y, Â = 350Tính số đo góc AOB =?
Nêu rõ tại sao tính được như vậy.








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Hướng dẫn chấm và Đáp án biểu điểm
Đề 01:
Câu 1:Mỗi ý 1đ
Câu 2:Phát biểu đúng định lí , ghi đúng GT và KL (1,5đ)
C/m đúng định lí (1,5đ)


Câu 3.Vẽ đúng : 1đ
Nói cách vẽ : 1đ
Câu 4: kẻ tia Oz //a//b rồi tính được Ô = 300+450=750 : 2đ
Giải thích chính xác : 1đ



Đề 02:

Câu 1:Mỗi ý 1đ
Câu 2: Phát biểu đúng định lí , ghi đúng GT và KL (1,5đ)
C/m đúng định lí (1,5đ)

Câu 3.Vẽ đúng : 1đ
Nói cách vẽ : 1đ
Câu 4: kẻ tia Oz //x//y rồi tính được Ô = 350+500=850 : 2đ
Giải thích chính xác : 1đ