A triangle is split in two. What is the blue area?
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The snowy peak
Category: Beginner
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Three stories
Six squares and a diagonal. What fraction is orange?
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Darth Vader
A regular hexagon containing three diagonals and three congruent circular arcs. What fraction is black?
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The ragged mountain
A square containing three line segments of given length. What fraction is green?
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The two jabs
Two congruent equilateral triangles share a vertex. What is the angle α?
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The hammock
A square inscribed in a triangle. Two areas are given. What is the square’s area?
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The green field
A square is divided in two quadrilaterals of given area. What fraction of the square’s perimeter is red?
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The partial eclipse
Two circles and a radius connecting their centres. What is the length of the parallel chord?
Four quarter circles of radius 1, each containing a square. What is the blue area?
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The pillbox
Three touching circles in a rectangle and a common tangent. What’s the angle?