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

the answer is 72

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.

1/4 is the answer if i recall correctly.