Three squares and a line segment of which a vertex is the midpoint. What is the proportion purple : green?
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Tension control
Tag: area
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A new slant
Two squares and a slanted rectangle share three vertices. What is the total area?
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Equilibrium
Three squares and a circle. The areas of the squares are given. What is the area of the circle?
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House of the rising sun
A semicircle, a circle, a square and an equilateral triangle. The two points are the tangency point and the semicircle centre. What fraction of the total area is yellow?
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Il tricolore
Two squares share two vertices. A line segment connects two other vertices, forming the base of three triangles. What is the proportion green : white : red?
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Stuck in the middle
A right triangle with semicircles along its perpendicular sides having lengths a and b. Two smaller inscribed circles. What is the proportion blue : red in terms of a and b?
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All the marbles
A circle containing eight touching circles. Circles of equal colour are congruent. What fraction of the total area is coloured?
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The drunk spider
A circle with several chords forming four coloured triangles. What is the proportion yellow : purple?
A triangle is divided in three smaller triangles. What is the proportion yellow : green?
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Eye of the apple
A circle with an inscribed triangle with an inscribed circle. The centre of the large circle is on the small one. What fraction of the area is blue?