A regular dodecagon contains a yellow square. Find the three angles α, β and γ.
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Solution
α=β=105° and γ=90°.
6 squares, 6 equilateral triangles, yellow square, yellow equilateral triangle, brown isosceles triangle with 15° base angles => Answer: γ=90°, β=60°+45°=105°, α=90°+15°=105°.
Video
Please find here the video solution: Video: Triangulation.
One reply on “Triangulation”
Alpha= 105
Beta = 105
Gamma =90
Internal angle of Dodecagon is 150.