A regular pentagon and two coloured equilateral triangles. What is the angle α?

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## Solution

The angle α is 12°.

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- Post author By Rik D. Tangerman
- Post date October 4, 2023
- No Comments on Outside the pentagon

A regular pentagon and two coloured equilateral triangles. What is the angle α?

Scroll down for a solution to this problem.

The angle α is 12°.