Question

Q.17] In an isosceles triangle, if base angle is 43°, find the vertex angle​

Answer 1

Answer:

In an isosceles triangle base angles are equal So, Other base angle will be also = 43°

Now,

According to angle sum property our equation=

x+43°+43°= 180°

=> x+86° = 180°

=> x = 180°- 86°

So, x= 94°.

Vertex angle will be = 94°