Four squares and an altitude to the top vertex form a right yellow traingle. What is the proportion yellow : green?
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The Pisa experiment
Tag: proportion
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The parrot
Two squares, a diagonal and a line segment. What is red : blue : green?
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Two hemispheres
A triangle with its circumscribed circle and a smaller intersecting circle. The two intersection points and the circumcentre are shown. What’s the proportion red : green?
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Overhanging rock
A rectangle with three line segments. What’s the proportion red : yellow?
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Emerging from water
Two squares and an extended side. What’s red : green : pink?
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Angel wings
A circle with four chords and a diameter. What’s the proportion blue : green?
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The secret document
One corner of a rectangular piece of paper is folded back and forth to the opposite side. What is the proportion red : blue?
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Cross the line
An equilateral triangle with two line segments crossing exactly on the semicircle. What is the proportion red : green?
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The baby block
Two squares and an extended side. Prove that red : green = blue : yellow.
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A fair division
A square with a diagonal and a right triangle. What’s the proportion blue : red?