An isosceles triangle has a vertex angle of 72°. What is the measure of each base angle?
Note
The two base angles of an isosceles triangle are equal. They share 180° − 72° = 108°, so each is 54°.
An isosceles triangle has a vertex angle of 72°. What is the measure of each base angle?
The two base angles of an isosceles triangle are equal. They share 180° − 72° = 108°, so each is 54°.