50% of all cakes. jenny baked that week were party cakes. 1-5 we're fruit cakes, and the remainder were sponge cakes. what percentage of cakes were sponge cakes

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Prove that quadrilateral is a rhombus.