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can you teach me to do part b?
Form 4 Circle Problem
2011-06-19 7:29 am
回答 (1)
2011-06-19 8:43 am
✔ 最佳答案
b) PA//BD//QC
BR//QC=>PB/AD=BR/QC
DR//QC=>AD/AC=DR/QC
PA//BD//QC=>PB/AD=AD/AC
So
BR/QC=DR/QC
BR=DR
Ris the mid-point of BD
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110618000051KK01218