Math Help

1. Draw a regular pentagon as best as you can. Going around the pentagon, connect every other vertex to form a symmetrical 5-pointed star (pentagram). The angles at the tips of this star are congruent. Find the sum of these angles.

2. Now draw a scalene pentagon. Then, create a non-symmetrical pentagram in the same way as you did in #1. This time, the five angles at the tips of the star are not congruent, but it is still possible to find their sum. Find the sum of these five angles using variables not numbers, so that we prove that this is the sum for any 5-pointed star.

please help me figure out this problem its due monday.