If each angle on the base of an isosceles triangle is 45°, then the measure of the third angle is?
If each angle on the base of an isosceles triangle is 45°, then the measure of the third angle is?
Explanation
In an isosceles triangle, two angles are equal. Given the base angles are 45° each.Let's find the third angle:
Third angle = 180° - (45° + 45°)
= 180° - 90°
= 90°