A circle with three tangents and two squares. The accentuated vertex is a tangency point. What’s the angle α?

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geometry puzzles

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- Post author By Rik D. Tangerman
- Post date October 26, 2021
- No Comments on Kindergarten

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- Post author By Rik D. Tangerman
- Post date October 15, 2021
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Two congruent equilateral triangles and two squares. What’s the angle α?

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- Post author By Rik D. Tangerman
- Post date October 14, 2021
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A quarter circle, a semicircle and a triangle. What’s the angle α?

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- Post author By Rik D. Tangerman
- Post date September 22, 2021
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Two squares sharing a vertex. What’s the angle α?

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- Post author By Rik D. Tangerman
- Post date September 15, 2021
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An equilateral triangle with three congruent squares. What’s the angle α?

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- Post author By Rik D. Tangerman
- Post date September 10, 2021
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Two regular pentagons share a vertex. What’s the angle α?

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- Post author By Rik D. Tangerman
- Post date August 26, 2021
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A square, a triangle and two equal angles. What is the angle α?

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- Post author By Rik D. Tangerman
- Post date August 23, 2021
- No Comments on Seventies tipi II

A triangle containing two tangent semicircles. What’s the proportion α : β?

- Tags angle, circle, proportion, triangle

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- Post author By Rik D. Tangerman
- Post date August 6, 2021
- 3 Comments on The spotlight

A right triangle with two cevians. What’s the angle α?

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- Post author By Rik D. Tangerman
- Post date July 22, 2021
- No Comments on Tilted hourglass II

Two equilateral triangles inside a square. What’s the proportion green : orange?

- Tags angle, area, proportion, square, triangle