The base angles of an isosceles triangle are equal and the vertex angle measures 80°.

Question

Convert the following statements into linear equations:

The base angles of an isosceles triangle are equal and the vertex angle measures 80°.

Answer 1

Let base angles each be equal to x & vertex bottom angle is 80°.

Applying triangle property, sum of all angles is 180°

∴ x + x + 80 = 180°

2x + 80 = 180°