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| 1. |
In a trapezium ,diagonals AC and BD meet at O.prove that ∆AOB ~∆COD |
| Answer» In trapezium opp. sides are parallelTherefore,AB||CD In ?AOB and ?CODAngle AOB =Angle COD (VOA)Angle ABO=Angle OCD (Alt .int. angles)Therefore ?AOB ~?COD (AA Similarity)Hence proved | |