Find the angles of an isosceles triangle if one of its angles is 40 °

In this task, you need to find the values of all angles of the triangle;

Since the triangle is isosceles, by the condition of the problem, then the two acute angles will be equal, and since we know the magnitude of the acute angle, then we can write that;

A = B = 40 °;

Where A and B are acute angles in a triangle, we find the remaining angle C;

For this we use the property of angles in a triangle, namely;

In any triangle, the sum of all its angles is 180 °, which means we can write the following equality;

180 ° = A + B + C;

180 ° = 40 ° + 40 ° + С;

C = 180 – (40 + 40) = 100 °.