Three equilateral triangles and three shared vertices. What’s the proportion blue : green?
Two concentric circles and two tangents. What is the yellow fraction?
An equilateral triangle containing a right triangle and a line segment. What fraction is pink?
A parallelogram is divided into several areas. What is the area X of the blue trapezium?
An equilateral triangle inscribed in a rectangle. What is its area X in terms of triangle areas A and B?
Four squares and an altitude to the top vertex form a right yellow traingle. What is the proportion yellow : green?
Two squares, a diagonal and a line segment. What is red : blue : green?
A square with an inscribed right triangle. What fraction is yellow?
A square, its diagonals and a right triangle. What fraction is green?
Two triangles form a quadrilateral. What’s the total orange area?