Q44 of 158 Page 159

If D is the mid-point of the side BC in Δ ABC where AB = AC, then ∠ADC is

In isosceles triangle altitude and median are the same


As joining line from mid-point of side to 3rd point we get median


So, D is midpoint of BC joining from point A gives AD as median


As In isosceles triangle altitude and median are the same


It possess 90° angle on BC


∴ ∠ADC = 90°

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