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A pyramid has a square base & 4 equilateral triangular sides. A tetrahedron is made up of 4 equilateral triangles. You can take cardboard and leave one side open and then put things on the inside to make it look like a real one.You can make it out of a lot of different things like marshmallows, card board, sugar cube, and a lot more. I am doing a project on an Egyptian pyramid and i am trying to make it out of marshmallows with one side open.

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14y ago

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