A square is divided in two quadrilaterals of given area. What fraction of the square’s perimeter is red?
A rectangle with two crossing line segments. What’s the minimal shaded fraction?
A right triangle is split in two. What is the maximum yellow fraction?
A semicircle containing two equilateral triangles containing a circle. What fraction is blue?
A triangle with an inscribed square. What fraction is yellow?
A rectangle inside a square. One of its sides is tangent to the quarter circle. What fraction is green as x approaches 0?
Two regular hexagons share two vertices. What fraction of the area is purple?
Two congruent circles and a triangle are contained in a circle. What fraction is coloured?
Three congruent right triangles. What fraction is shaded?
Four squares inside another square. What fraction is yellow?