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43. In triangle ABC, angle BAC=90 degree and AB=BC.seg AP is perpendicular on side BC. B-P-C.D is any point on side BC. prove that 2AD2=BD2+CD2 |
| Answer» 43. In triangle ABC, angle BAC=90 degree and AB=BC.seg AP is perpendicular on side BC. B-P-C.D is any point on side BC. prove that 2AD2=BD2+CD2 | |