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8 questions
如圖
甲→乙→丙→丁
甲→丁→丙→乙
甲→丙→丁→乙
乙→丙→丁→甲
SAS
AAS
SSS
RHS
∠R=75°
∠D=30°
∠R=50°
∠E=70°
∠A=60°
∠D=60°
不全等
周長不相等
∠A'DB=∠BDC
面積相等
45°
50°
60°
65°
1
2
3
無限多
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