An isosceles triangle has a vertex angle of 40°. What is the measure of each base angle?
Note
The two base angles of an isosceles triangle are equal. They share 180° − 40° = 140°, so each is 70°.
An isosceles triangle has a vertex angle of 40°. What is the measure of each base angle?
The two base angles of an isosceles triangle are equal. They share 180° − 40° = 140°, so each is 70°.