The common point

Two equilateral triangles share a vertex. What’s the angle α?

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The angle α is 120°.

Solution by ricardpe.


The common point
We share today
Is the earth that shelters us
From North to South
From East to West
We all go the same way
Living in a precious planet
A jewel in a box we cannot forget
Our Earth is a golden globe
A warmer place for everyone
Cause here on Earth we are all born


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