摘要:△ABC和△A′B′C′中.AB=8cm.BC=6cm.CA=5cm.A′B′=6cm.B′C′=4.5cm.C′A′=3.75cm.则△ABC和△A′B′C′吗? .理由是 .
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(1)如图所示,若∠1=∠2,则a∥b;
(2)在△ABC和△A′B′C′中,AB=A′B′,AC=A′C′,∠A=∠A′,则△ABC≌△A′B′C′;
(3)如果a=b,b=c,那么a=c.