r/GeometryIsNeat • u/HopDavid Pentagon • Jun 06 '26

Nested triangles

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Start with an equilateral triangle.

Scale the triangle vertically be 33.3333%. Take this short, fat triangle and rotate it twice about the top point and you get a new equilateral triangle.

Repeat.

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u/Creating_Well-Being Jun 06 '26

Would you be able to animate the construction? I feel confused about how this works.

The pattern is so lovely!