Two squares and an equilateral triangle. If the yellow area is 1, what is the blue area?
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The only way is up
Tag: square
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Daft Mouse
A square with two attached regular pentagons. A side and a diagonal are extended. What’s the angle?
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The colour of spring
A square with a diagonal and a right angle. Two areas are given. How large is the pink area?
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Two hefty volumes
Two congruent rectangles inscribed in a square. What fraction of the area is blue?
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Mini and Maxi
Two squares of area 1 and 4 are inscribed in their own triangle and placed as shown. What fraction is coloured?
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Turning tables
Two squares share a vertex. What fraction of the area is the overlap region?
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Tall and wide
An equilateral triangle inscribed in a square. What’s the proportion of the red to the blue area?
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Who’s afraid of red, yellow and blue?
Three squares. The top line segment is variable in length. What’s the minimal blue fraction?
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The balance sheet
A unit square and a parallelogram. What’s the area of the latter?
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Mondriaan in maths
Two squares with areas of 1 and 3 are inscribed in a square frame. What’s the angle?