Penrose Stairway

Author:Ivan De Winne

The Penrose stairs or Penrose steps, also dubbed the impossible staircase, is an impossible object created by Lionel Penrose and his son Roger Penrose.

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Flip A Bunch of Coins
apec
Flip 5 Coins.
Flip 9 Coins
Roll 6d five times

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Flersifret subtraksjon
Spline_Global)
Pythagorean Theorem: Right Triangle Rotations
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Translation-1
הרחבת משפט פיתגורס
Week 14 Day 1 Learning Goals

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Rectangle
General Quadrilateral
Arithmetic
Power Functions
Conic Sections