A triangle containing two congruent semicircles. The four tangency points are shown. What fraction is yellow?
Tag: fraction
Tip of the veil
A square with two right angles. What fraction is yellow?
Pac-Man pack
Four Pac-Men eat the corners of a square while four others stand guard. What fraction of the square is eaten?
Le col bleu
A square with two line segments. What fraction is blue?
Night mountain
A rectangle containing three line segments. What fraction is blue?
Off the grid
A square on a grid containing a red triangle with an extended side. What is the red fraction?
The Cheshire Cat grin
What is the total area of the green teeth relative to the large circle area? (Assume the inner circle radius is 80% of the outer. The 32 lines forming the tooth sides are concurrent, and spaced at equal angles apart.)
All-seeing eye
If the radius shrinks by the factor 1/2 for each smaller circle, what fraction of the whole area is represented by all the blue crescents (separated by the red crescents)? Assume the circles keep going inward forever.
The beehive
Three regular hexagons, one centre and a triangle. What fraction of the total area is orange?
The personal letter
Two rectangles share two vertices. What’s the green fraction?