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Protection

Two coloured squares inside a triangle inside a square of side length a. What is the length proportion a : b?

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Solution

The proportion a : b is 3 : 2.

Solution by Dmitriy Spiridonov.

Visual solution

Solution without words by David Andriana.

Poem

Protection
A garden greenhouse
Protects from heat and cold
And the trend of gradual warming
We all know the climate is getting
Worse for land and buildings
Let’s hope the country will still be living
And the sun will still be flashing
And clouds and rain will always be coming

Bella

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