In Maths we made some 3D shapes. 3D stands for 3 dimensional. we made a cylinder, a cone, a triangular based prism, a rectangular based prism, a triangular based pyramid and a rectangular based pyramid. A pyramid has an apex which makes it that shape. A prism does not have an apex because they don't all connect in one place. The only shapes we made that can roll are a cone and a cylinder. The only way a shape can be a prism is if it has to bases that are parallel.
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