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Out of proportion

An equilateral triangle containing a parallelogram, another equilateral triangle and a circular arc that is tangent in its base vertices. What is the proportion pink : blue?

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Solution

Pink : blue is 2 : 1.

Solution of the general problem by Bob Ruyle.

Poem

Out of proportion
The figures do echo
Silent triangles
Expressing infinite know-how
Beautiful lines
Everything fits
In the geometric world
Aligning striking colours
What do they tell ?
Speak to you
Not easy to do
Figures can tell more
If I really implore
I need their password

Bella

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