Congruence
2012-04-01 9:21 am
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please show step to prove the 2 triangle are Congruence
回答 (2)
2012-04-01 12:44 pm
✔ 最佳答案
∠ADC + ∠BAD = 180° (int.∠s supp.) ......(1)∠FAQ + ∠BAF + ∠QAD + ∠ BAD = 360° (∠s at a pt.)
∠FAQ + 90° + 90° + ∠ BAD = 360° (property of square)
∠FAQ + ∠ BAD = 180° ...... (2)
(1) - (2) :
∠ADC - ∠FAQ = 0
∠ADC = ∠FAQ
AD = AQ (property of square)
CD = AB(opp. sides equal) = AF (property of square)
∴ ΔFAQ ≌ ΔCDA (S.A.S.)
2012-04-01 9:50 am
有咩資料?????????????????????????
收錄日期: 2021-04-21 22:23:48
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120401000051KK00060