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Plane Geometry
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Demonstrations 161  180 of 996
Triangle Fractal
Triangle to Parallelogram
Tangent Circle and Arbelos
Pólya's Mechanical Model for the Fermat Point
Pentagon Spirals
Points on a Spiral
Polygon Spirals
Rolling Circles
Length of Line Illusion
A Device that Illustrates Pythagoras' Theorem
Kürschák's Dodecagon
Circles on a Grid
Hexagons and the Golden Ratio
Deltoid Kite Tiling
Connected Astroids
Five Circles and the Golden Ratio
FinslerHadwiger Theorem
Iterated Subdivision of a Triangle
Areas of the Lens and Two Lunes of Two Intersecting Circles
Fun with Koch Snowflakes
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