Polygon in Polygon

Topic:Area

James Tanton, inspired by Vincent Pantaloni, tweeted an image I misunderstood, then found something cool. Leaves me wondering why the area case is different for n=4. Tanton tweet

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Function Art 3D - Flower
Odd Function Explorer
Pythagorean Theorem: Quick Illustrator
Squares Question
Congruent Figures

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The 11 patterns of a cube
Peter_Basics_Label
Pythagorean Theorem Proof
最短的路徑
RayShiftBySlab

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Cosine
Special Points
Vectors 3D (Three-Dimensional)
Multiplication
Polygons