Question

What is the sum of all angles of a triangle? $180°$

Answer 1

We have,

The angle sum property of a triangle states that the total measure of the three angles of a triangle is $180°$

Let $ABC$be a triangle and $\angle A,\angle Band\angle C$are the angles of a triangle.

Then, by angle sum property $\angle A+\angle B+C=180°$

So, by the angle sum property of a triangle, the sum of all angles of a triangle is $180°$.