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A cube has 6 faces, each having 4 right angles, for a total of 24 angles.
There are 4 corners in a flat rectangle and 8 corners in a 3d rectangle(rectangular prism).Four.
A 2D rectangle has no edges but has 4 boundaries, and a 3D rectangle is a rectangular prism and has 12 edges.
i believe it is 6 there's your answer:)
A cone has no acute angles because a cone is a 3D shape and not a 2D.