A regular pentagon and a square share two vertices. What’s the angle α?
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Solution
The angle α is 117°.
Poem
The three day stubble
Can change your look and face
That shows several unsleepy nights
Sometimes black, or grey or white
A trendy haircut is good and right
A winter stubble can hold you warm
But not for an appointment
With a lady against her smooth skin
You need an ointment
