Q. 445.0( 1 Vote )

If D is the mid-point of the side BC in Δ ABC where AB = AC, then ADC is
A. 60°

B. 45°

C. 120s°

D. 90°

Answer :

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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