Thể loại Giáo án bài giảng Hình học 6
Số trang 1
Ngày tạo 11/1/2019 2:51:03 PM +00:00
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Tên tệp toan 6 hinh kt chuong i de so 2 doc
KIỂM TRA CHƯƠNG I HÌNH HỌC 6 – ĐỀ SỐ 2
Giáo viên: Doãn Thị Thanh Hương – 0988.163.160
I/ Tr¾c nghiÖm (3®iÓm). Chän ch÷ c¸i ®øng tríc c©u tr¶ lêi ®óng( Tõ c©u 2 ®Õn c©u 5)
C©u 1: Cho h×nh vÏ §iÒn kÝ hiÖu thÝch hîp vµo « trèng |
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M |
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a |
N |
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a |
C©u 2: Cho 5 ®iÓm trong ®ã kh«ng cã ba ®iÓm nµo th¼ng hµng, sè ®êng th¼ng ph©n biÖt ®i qua c¸c cÆp ®iÓm lµ:
A. 5 |
B. 10 |
C. 20 |
D. 4 |
C©u 3: Cho h×nh vÏ. Khi ®ã |
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A. Hai tia Mx, Ny ®èi nhau |
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B. Hai tia MN, NM ®èi nhau |
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C. Hai tia Mx, My ®èi nhau |
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D. Hai tia My, Nx®èi nhau |
C©u 4: Cho ®iÓm M n»m gi÷a hai ®iÓm A vµ B khi ®ã:
A. Ba ®iÓm A, B, M th¼ng hµng |
B. Ba ®iÓm A, B, M kh«ng th¼ng hµng |
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C. Hai ®iÓm A, B n»m cïng phÝa ®èi víi M |
D. Hai ®iÓm M vµ B n»m kh¸c phÝa so víi A |
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C©u 5: Cho h×nh vÏ Sè ®o¹n th¼ng trªn h×nh vÏ lµ: A. 3 ; B. 4 ; C. 5 ; D. 6 |
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II/ Tù luËn (7 ®iÓm)
C©u 1. (2,5 ®iÓm) VÏ ba ®iÓm M, N, P biÕt: MN=5cm; MP= 3cm; NP= 2cm.
a) TÝnh MP+NP. So s¸nh MN víi MP+NP
b) Ba ®iÓm M, N, P cã th¼ng hµng kh«ng? V× sao?
C©u 2. (4,5 ®iÓm) Trªn tia Ox, vÏ ®o¹n th¼ng OA=2cm; OB=4cm.
a) Trong ba ®iÓm A, B, O ®iÓm nµo n»m gi÷a hai ®iÓm cßn l¹i? V× sao?
b) TÝnh ®é dµi ®o¹n th¼ng AB. So s¸nh OA vµ AB
c) §iÓm A cã lµ trung ®iÓm cña ®o¹n th¼ng OB kh«ng? V× sao?
Bµi lµm
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I/ Tr¾c nghiÖm ( 3 ®iÓm)
C©u |
1 |
2 |
3 |
4 |
5 |
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§¸p ¸n |
Ma |
Na |
B |
C |
A |
D |
BiÓu ®iÓm |
0,5® |
0,5® |
0,5® |
0,5® |
0,5® |
0,5® |
II/ Tù luËn (7 ®iÓm)
C©u |
§¸p ¸n |
BiÓu ®iÓm |
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1 |
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- VÏ h×nh ®óng
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0,5® |
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a) MP+NP= 3+2=5cm |
0,5® |
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mµ MN=5cm nªn MP+NP=MN |
0,5® |
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b) Theo phÇn a th× MP+NP=MN |
0,5® |
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nªn P n»m gi÷a M, N=> 3 ®iÓm M, P, N th¼ng hµng |
0,5® |
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2 |
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- VÏ h×nh ®óng
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1® |
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a) §iÓm A n»m gi÷a O vµ B v× OA< OB (2cm < 4cm) |
0,5® 0,5® |
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b) V× A n»m gi÷a O vµ B nªn: |
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OA+AB=OB |
0,5® |
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Thay sè vµo ta cã: 2+AB=4 |
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=> AB=4-2=2cm |
0,5® |
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mµ OB=2cm nªn OA=AB |
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c) A lµ trung ®iÓm cña OB v×: |
0,5® |
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+ A n»m gi÷a O vµ B ( theo phÇn a) |
0,5® |
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+OA=AB ( theo phÇn b) |
0,5® |
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Ghi chó: NÕu häc sinh lµm theo c¸ch kh¸c ®óng cho ®iÓm tèi ®a
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