2 |
3 |
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3 |
2 |
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A.∠A=∠A′=45°38′,∠C=26°22′,∠C′=108° | ||||||
B.AB=1,AC=1.5,BC=2,A′B′=12,B′C′=8,A′C′=16 | ||||||
C.BC=a,AC=b,AB=c,A′B′=
| ||||||
D.AB=AC,A′B′=A′C′,∠A=∠A′=40° |
A.△ABC与△A1B1C1的对应角不相等 |
B.△ABC与△A1B1C1不一定相似 |
C.△ABC与△A1B1C1的相似比为1:2 |
D.△ABC与△A1B1C1的相似比为2:1 |
A.∠A=∠A′=45°,∠B=26°,∠B′=109° | ||||||
B.AB=1,AC=1.5,BC=2,A′B′=4,A′C′=2,B′C′=3 | ||||||
C.∠A=∠B′,AB=2,AC=2.4,A′B′=3.6,B′C′=3 | ||||||
D.AB=3,AC=5,BC=7,A′B′=
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