
三四章回头看

Quiz
•
Mathematics
•
8th Grade
•
Medium

Melody Meng
Used 9+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
一个图形和他经过平移所得的图形中,对应点所连的线段______
相等
平行(或在一条直线上)
平行(或在一条直线上)且相等
2.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
在平面直角坐标系中,线段AB的端点坐标分别为A(2,-1),B(1,0),将线段AB平移后,点A的对应点A'的坐标为(3,1),则点B的对应点B'的坐标为_____
(2,1)
(2,2)
(1,2)
(1,1)
3.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
3
6
4.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
如图,△ABC是等边三角形,点D是BC上一点,将△ABD绕点A逆时针旋转60°得到△ACE。若CD=2BD,△ABD面积为3,则四边形ADCE的面积为______
3
6
9
12
5.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
如图,将△OAB绕点O按逆时针方向旋转80°,得到△OCD,若∠A=2∠D=100°,则∠α的度数是_____
50°
60°
40°
30°
6.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
已知ab=-3,a+b=2,则a2b+ab2的值是_____
-6
6
-1
1
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
把多项式(x+2y)2-6x(x+2y)提取公因式(x+2y)后,另一个因式为_____
2x-5y
-5x-2y
-5x+2y
5x+2y
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