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The red flag

Three squares of which two vertices are connected. If the red triangle has area 1.5 and the green square area 1, what is the side length x?

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Solution

The length x is the Golden Ratio φ.

Solution by ohmohm.

Poem

The red flag
For a danger or something’s not right
To wave for love
To wave for life
Sometimes for revolution
Or for brotherhood of man
Colour of blood,
Peace must gain
And honour to the flag of Ukraine
Breaking free from russian chains
Blue and yellow
The enemy must go

Bella

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