Question

Question 1 (iv)
Find the value of unknown x in the following isosceles triangle:

Answer 1

$\text{In the given isosceles triangle,}x+x+{50}^{\circ }={180}^{\circ }\text{[By angle sum property of a triangle]}\Rightarrow 2x+{50}^{\circ }={180}^{\circ }\Rightarrow 2x={180}^{\circ }-{50}^{\circ }\Rightarrow 2x={130}^{\circ }\Rightarrow x=\frac{{130}^{\circ }}{2}={65}^{\circ }$