Question

Find the measure of the vertex angle in the diagram

Answer 1

As according to given diagram:

The given triangle is isosceles triangle.

So as we know that the angle infront of equal sides are also equal.

hence:

`\begin{gathered} 2x+2(2x-3)=180 \\ 2x+4x-6=180 \\ 6x=186 \\ x=(186)/(6) \\ x=31 \end{gathered}`

Now the vertex angle is 2x so:

2(31)=62 degree

hence B is correct option