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Home > GC > Chapter 12 > Lesson 12.1.5 > Problem 12-47


5‑pointed star with a pentagon in the interior and isosceles triangles connected to each of the sides. The angle of each of the star points is, a.A regular pentagram is a 5-pointed star that has congruent angles at each of its outer vertices. Use the fact that all regular pentagrams can be inscribed in a circle to find the measure of angle a at right.  

Find the measure of each of the intercepted arcs.

The degree measure of an inscribed angle is half the measure of the intercepted arc.