Categories
Intermediate

Eight corners

A regular octagon with two diagonals and two squares. What’s the area proportion of the blue to the red square?

Categories
Beginner

The chocolate muffin

Four isosceles triangles of base 1 and four of base √2 share their top vertex. What is the proportion brown : gold?

Categories
Beginner

The blue pill

A regular octagon containing a blue hexagon. All line segments have equal length. What fraction is blue?

Categories
Beginner

The circus tent

A regular octagon is coloured as shown. What fraction of its area is red?