1 |
2 |
1 |
4 |
1 |
8 |
3 |
4 |
3 |
8 |
1 |
2 |
1 |
3 |
1 |
24 |
2 |
3 |
1 |
12 |
1 |
2 |
3 |
16 |
13 |
48 |
1 |
24 |
13 |
48 |
A.105° | B.115° | C.125° | D.65° |
A.平行四边形的对角线平分且相等 |
B.有一个角是直角的菱形是正方形 |
C.一组对边平行,另一组对边相等的四边形是平行四边形 |
D.矩形的对角线相等且互相垂直平分 |
A.AB=CD | B.BO=OD | C.AC⊥BD | D.∠BAD=∠BCD |
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