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Plane Geometry is about flat shapes like lines, circles and triangles , shapes that can be drawn on a piece of paper

6 votes
2 answers
419 views

Geometric dissection theory

A few days ago, i realized that one way to prove the Pythagorean Theorem is to dissect the given right-angled triangle into 2 triangles similar to it, and apply well-known properties of ratios of area …