Cubestick
Glue three cubes together to make a cuboid of dimensions 3 by 1 by 1. Label 4 points on the cuboid with coordinates A = (0,0,0), B=(1,1,1), C=(2,1,0) and D=(3,1,0). Now the challenge is to find at least two different ways to calculate the angles \angle ABC and \angle ABD.
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Four Points on a Cube
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