Aregular pentagon is created using the bases of five congruent isosceles triangles, joined at a common vertex. the total number of degrees in the center is 360°. if all five vertex angles meeting at the center are congruent, what is the measure of a base angle of one of the triangles?

If all five vertex angles meeting at the center of a regular pentagon are congruent, then each vertex angle of triangle has measure

As known the sum of the measures of three triangle angles is 180° and base angles of isosceles triangle are congruent, then the measure of a base angle of one of the triangles is

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