A five pointed star is made by extending sides of a regular pentagon. What fraction of star on right is shaded yellow?
A twelve pointed star is made by extending the sides of a regular 12-sided polygon (a dodecagon). What is the measure of the grey angle?
Every other side of a regular decagon is extended to form a regular pentagon, find the ratio of two shaded regions?
The area of the small regular pentagon is A. The area of the big regular pentagon is B. What is A/B?
If the star has an outside perimeter of 50, and the pentagon has a perimeter of 30, what is AB + BC + CD + DE + EA = ??
The diagram depicts a shaded square in a square inside another square. What fraction of the diagram above is shaded?