Question

Question 3
$\Delta ABC$, if AB =AC and $\angle B={50}^{\circ }$ then $\angle C$ is equal to
(A) ${40}^{\circ }$
(B) ${50}^{\circ }$
(C) ${80}^{\circ }$
(D) ${130}^{\circ }$

Answer 1

Given ABC such that AB = AC and $\angle B={50}^{\circ }$ in $\Delta ABCAB=AC$

$\Rightarrow \angle C=\angle B$ [angles opposite to equal sides ]
$\Rightarrow \angle C={50}^{\circ }[\because \angle B={50}^{\circ }(given\left)\right]$