A square with a diagonal and two circles. What is the area proportion of the two circles?
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The bubble chamber II
Tag: proportion
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The hawfinch II
A circle with two tangents. What’s red : blue in terms of α?
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The manta ray
A quadrilateral with connected side midpoints. What’s blue : red : yellow?
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The truss bridge
Two lines connected by five triangles. Prove that orange = blue.
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The sandal
A triangle with two angular bisectors. What’s the proportion blue : red?
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The orange pennant
A regular pentagon with two coloured triangles. What’s the proportion orange : blue?
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Crossing mountains
A rectangle with four line segments. What’s brown : blue?
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Diamond life
Two equilateral triangles and one centre. What’s green : red?
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The dirty thirties
A triangle containing a semicircle and a circular sector centred in the right vertex. What is blue : green?
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Scratching the surface
Three tangent semicircles and two coloured triangles. What’s the proportion yellow : green?