geometry puzzles

Fives and six

Fives and six

Two regular pentagons and a circle through four vertices and two intersection points. What is is the green overlap fraction?

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Solution

The green fraction is 1/2φ.

Solution by Nong Prachya.

Two regular pentagons and a circle through four vertices and two intersection points. What is is the green overlap fraction? https://t.co/zOSh8XQ6Gp pic.twitter.com/uL145QWY5d
— Mirangu (@Mirangu1) April 12, 2023

Tags area, fraction, pentagon

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