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| 1. |
In triangle ABC, DEIIBC and CDIIEF. Prove that AD2 = AF * AB |
| Answer» In triangle ABC, using BPT,AD/AB = AE/AC ...........eq.(i)In triangle ADC, using BPT,AF/AD = AE/AC. ...........eq.(ii)From eq.(i) and (ii), we getAD/AB = AF/AD=>. AD2 = AF x AB proved | |