A square divided by a diagonal and another line segment. What fraction of its area is purple?
A square is divided by six line segments. What fraction is brown?
A parabola is tangent to two sides of a square and to the hypotenuse of an isosceles triangle. The three tangency points are shown. What fraction of the square is green?
Two overlapping congruent isosceles triangles. What fraction of the total area is green?
Four equilateral triangles inscribed in a fifth one. What fraction of the latter is coloured?
A square contains a triangle. What fraction of the square is red?
A parabola passing through a square’s bottom vertices and tangent to its top side. What fraction is blue?
A square with four quarter circles of which the intersection points are the vertices of a yellow quadrilateral. What fraction of the total area is yellow?
A right triangle with three squares forming a smaller inner triangle. What is the maximal blue fraction?
The vertices of a regular hexagon are connected to midpoints of opposing sides. What fraction is red?