Đề kiẻm tra CN 9

Phòng GD-ĐT Định Hoá
Trường THCS Bảo Linh
KIỂM TRA : Khảo sát đầu năm
Môn : Toán 7
( Thời gian 45 phút )




Trường THCS Bảo Linh
Họ và Tên: ……………………………………. Kiểm Tra : Khảo sát đầu năm
Lớp: 7 Môn: Toán 7
( Thời gian: 20 phút )
Điểm Lời phê của giáo viên

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Đề bài.
Câu 1: Thực hiện phép tính.
a) ; b) ; c)
Câu 2: Tìm x biết.
a) ; b)
Câu 3: Vẽ cặp góc so le trong xAB , yBA có số đo đều bằng 1200 . Hỏi hai đường thẳng Ax và By có sông song với không ? vì sao ? Hãy nêu cách vẽ .
Bài Làm :

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Trường THCS Bảo Linh Kiểm Tra : Chương I: Đường thẳng song song
Họ và Tên: ……………………………………. Đường thẳng vuông góc
Lớp : 7 Môn: Toán 7 ( Thời gian: 45 phút )
Điểm Lời phê của giáo viên

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Đề bài.
I. Phần trắc nghiệm: ( 3 điểm )
Khoanh tròn vào chữ cái đứng trước mỗi câu mà em cho là đúng nhất của các câu sau
Câu 1: Hai góc đối đỉnh thì :
A . Bù nhau ; B . Phụ nhau ; C . Bằng nhau ; D . Cùng bằng 900
Câu 2: Cho hai góc đối đỉnh
và
, biết
= 600 thì :
A .
; B .
B . Cả hai ý A và B đều đúng ; D . Cả hai ý A và B đều sai
Câu 3: Hai đường thẳng vuông góc là hai đương thẳng cắt nhau và trong các góc tạo thành có :
A . 4 góc vuông ; B . 1 góc vuông ; C . 2 góc vuông ; D . Cả 3 ý trên đều đúng
Câu 4: Đường trung trực của đoạn thẳng AB là :
A. Đường thẳng vuông góc với AB ; B . Đường thẳng đi qua trung điểm của AB
C . Đường thẳng vuông góc với AB tại trung điểm của AB
D . Cả 3 ý trên đều đúng
Câu 5: Cho 3 đường thẳng a , b , c phân biệt . Biết a
c và b
c , suy ra :
A . a trùng với b ; B . a và b cắt nhau ; C . a // b ; D . a
b
Câu 6: Qua một điểm M nằm ngoài đường thẳng a vẽ được mấy đương thẳng song song với đường thẳng a :
A . Hai đường thẳng ; B . Một đường thẳng ; C. Ba đường thẳng ; D . Vô số
II. Phần tự luận : ( 7 điểm ) c
Bài 1 : ( 2 điểm) a
a) Phát biểu các định lý có được từ hình vẽ sau:
b
b) viết GT và KL của các định lý từ phát biểu của câu a
Bài làm
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Bài 2 : ( 2 điểm) : Cho hình vẽ .
Biết a // b và
= 700,
= 900.
Tính số đo của góc và



Bài làm
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Bài 3 : ( 2 điểm) : Cho hình vẽ sau :
Biết
= 300 ;
= 450;
= 750.
Chứng ming : a // b



Bài làm
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BIỂU ĐIỂM VÀ HƯỚNG DẪN CHẤM
I. PHẦN TRẮC NGHIỆM ( 3 điểm )
Câu 1