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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montecarlo circles 5
bewijs stelling van Pythagoras
Slope Between 2 Points (Phase 2)
函數的單調性
Prism Drawn in 2-Point Perspective

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Parallel Lines
Media Trigonometri
RETA SECANTE
Basic Steel Coupon Test (Fy Fu Demo)

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Solids or 3D Shapes
Diagrams
Hypergeometric Distribution
Rotation
Statistics