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2 Circles 1 Rectangle
4:00
Fun Blue Semicircle
3:46
Harder than it looks!
5:42
2 Squares 1 Semicircle
8:31
Square Root of Imaginary Number
5:16
Cool Geometry Puzzle
14:02
Is 1/4 of the circle shaded? Most students get this wrong
7:35
Coolest Math Challenge
14:32
I Made an Electronic Chessboard Without Turns