Two regular pentagons share a vertex. What’s the angle α?
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Solution
The angle α is 36°.

Poem
The pentagon is a figure with
5 sides and 5 angles
And also the headquarter of the american defense
It can be a figure so shelby
With 5 angles so sparkly
And a lot of 5 sides too
Five corners
Five lines
Pente in greek means five
I’m more bright than a triangle
I’m alive
