Question

The measures of two equal angles of an isosceles triangle is 25° each. Find the measure of the third angle by using angle sum property of triangle.​

Answer 1

Answer:

130°

Step-by-step explanation:

Two equal angles of an isosceles triangle = 25°

Let the measure of the third angle be x

By angle sum property of triangle

Sum of all angles of a triangle = 180°

25° + 25° + x = 180°

50° + x = 180°

x = 180° - 50°

x = 130°

Therefore the measure of the third angle is 130°.