Polygon in Polygon

Thème :Aire

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

Nouvelles ressources

Deciding How New Information Affects Probability
Squaring a Rectangle (PST Version)
Segment Addition Postulate (Mild Questions)
Isosceles Right Triangle
Odd Function Explorer

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circular surfaces 3D
Riemann Sums to Approximate Area
การลบจำนวนเต็ม
EdSurge Fusion 2018: GeoGebra Resource Demonstrations
Factoring numbers

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Suites et Séries
Vecteurs
Similitude
Quadrilatères
Translation