Toan lop 9 - hinh
Chia sẻ bởi Nguyễn Hồng Hạnh |
Ngày 10/10/2018 |
20
Chia sẻ tài liệu: toan lop 9 - hinh thuộc Tiếng Anh 6
Nội dung tài liệu:
BÀI KIỂM TRA 45 PHÚT HÌNH HỌC - Đề số 1
Ngày kiểm tra: Thứ sáu/ 15.4.2011
Họ và tên học sinh……………………………………….Lớp 9A4
Điểm
Lời phê của cô giáo
Câu 1: Bánh của một xe đạp bơm căng có đường kính là 73 cm. Hỏi xe đi được bao nhiêu km nếu bánh xe quay 1000 vòng.
Câu 2: Cho hình vẽ
Biết: đường kính AB = 3 cm; (CAB = 300.
Tính: Độ dài cung BmD
Câu 3: Cho tam giác ABC vuông ở A (AB > AC), đường cao AH. Trên nửa mặt phẳng bờ BC chứa điểm A, vẽ nửa đường tròn đường kính BH cắt AB tại E, nửa đường tròn đường kính HC cắt AC tại F.
a, Chứng minh tứ giác AFHE là hình chữ nhật.
b, Chứng minh tứ giác BEFC là tứ giác nội tiếp
c, Chứng minh: AE . AB = AF. AC.
Giải
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BÀI KIỂM TRA 45 PHÚT HÌNH HỌC - Đề số 2
Ngày kiểm tra: Thứ sáu/ 15.4.2011
Họ và tên học sinh……………………………………….Lớp 9A4
Điểm
Lời phê của cô giáo
Câu 1: Bánh của một xe đạp bơm căng có đường kính là 73 cm. Hỏi bánh xe quay được bao nhiêu vòng khi xe đi được 4km.
Câu 2: Cho hình vẽ
Biết: đường kính AB = 3 cm; (CAB = 300.
Tính: Diện tích hình quạt tròn OBmD
Câu 3: Cho đường tròn O, bán kính R có hai đường kính AB và CD vuông góc với nhau. Trên đoạn thẳng AB lấy điểm M (khác điểm O). Đường thẳng CM cắt đường tròn O tại điểm thứ hai là N. Đường thẳng vuông góc với AB tại M cắt tiếp tuyến tại N của đường tròn ở điểm P. Chứng minh:
a, Tứ giác OMNP nội tiếp.
b, Tứ giác CMPO là hình bình hành.
c. Tích CM.CN không phụ thuộc vào vị trí của điểm M .
Giải
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Ngày kiểm tra: Thứ sáu/ 15.4.2011
Họ và tên học sinh……………………………………….Lớp 9A4
Điểm
Lời phê của cô giáo
Câu 1: Bánh của một xe đạp bơm căng có đường kính là 73 cm. Hỏi xe đi được bao nhiêu km nếu bánh xe quay 1000 vòng.
Câu 2: Cho hình vẽ
Biết: đường kính AB = 3 cm; (CAB = 300.
Tính: Độ dài cung BmD
Câu 3: Cho tam giác ABC vuông ở A (AB > AC), đường cao AH. Trên nửa mặt phẳng bờ BC chứa điểm A, vẽ nửa đường tròn đường kính BH cắt AB tại E, nửa đường tròn đường kính HC cắt AC tại F.
a, Chứng minh tứ giác AFHE là hình chữ nhật.
b, Chứng minh tứ giác BEFC là tứ giác nội tiếp
c, Chứng minh: AE . AB = AF. AC.
Giải
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BÀI KIỂM TRA 45 PHÚT HÌNH HỌC - Đề số 2
Ngày kiểm tra: Thứ sáu/ 15.4.2011
Họ và tên học sinh……………………………………….Lớp 9A4
Điểm
Lời phê của cô giáo
Câu 1: Bánh của một xe đạp bơm căng có đường kính là 73 cm. Hỏi bánh xe quay được bao nhiêu vòng khi xe đi được 4km.
Câu 2: Cho hình vẽ
Biết: đường kính AB = 3 cm; (CAB = 300.
Tính: Diện tích hình quạt tròn OBmD
Câu 3: Cho đường tròn O, bán kính R có hai đường kính AB và CD vuông góc với nhau. Trên đoạn thẳng AB lấy điểm M (khác điểm O). Đường thẳng CM cắt đường tròn O tại điểm thứ hai là N. Đường thẳng vuông góc với AB tại M cắt tiếp tuyến tại N của đường tròn ở điểm P. Chứng minh:
a, Tứ giác OMNP nội tiếp.
b, Tứ giác CMPO là hình bình hành.
c. Tích CM.CN không phụ thuộc vào vị trí của điểm M .
Giải
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