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George Beck
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Demonstrations 61  80 of 132
Convexification
Completing the Square
A Continuous Mapping That Fixes All Boundary Points but No Interior Points
Square Spiral for a Given Number of Divisors
Skewed Cone
3×3 Determinants by Expansion
3×3 Determinants Using Diagonals
Dual Billiards
Zonogons: Minkowski Sums of Line Segments in 2D
Reflecting a Lattice of Points
Dust with Line Shadows in Every Direction
Ellipse and Friends
Euler's Generating Function for the Partition Numbers
Normalizing Vectors
Any Quadrilateral Can Tile
Cesāro Sums of Some Unit Sequences
The Minkowski Sum of a Disk and a Polygon
Interval Notation
Successive Averages of the Vertices of a Polygon
The Minkowski Sum of Two Triangles
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