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Izidor Hafner
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Demonstrations 461  480 of 667
Dissection of a Pentagon to Almost a Square
Binary Card Game
Mazes on Riemann Surfaces
Find a Solid that Matches the Net
Dissection of Bilunabirotunda into Two Pentagonal Dipyramids and a Rhombic Dodecahedron of the Second Kind
Find a Formula for Pi
Vector Addition is Commutative
Factoring Gaussian Integers
Is the Given Function Injective?
Locate Important Real Numbers
Locate a Point on a Map of the World
Test Your Spatial Visualization Abilities
Polar Angles and Points on the Unit Circle
Total Probability and Bayes's Theorem
Probability Logic Test
Mazes on Polyhedra Nets
Basic Examples of Propositional Calculus
Find a Model for a Set of Propositions
Typical Predicate Calculus Statements
FirstOrder Logic Test
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