Jack has two square-based pyramids that are the same size. He sticks the square faces together to make a new 3D shape. How many faces and how many edges does his new 3D shape have?

Question

Nat14 · Answer

I think it's 8faces and 6edges?

Anonymous · Answer

After joining two square-based pyramids at their bases, the new 3D shape has 9 faces and 12 edges. This calculation includes considering the removal of the joint base face and adjusting the number of edges accordingly. Thus, the resulting shape displays distinct geometric characteristics from the individual pyramids. 
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Jack has two square-based pyramids that are the same size. He sticks the square faces together to make a new 3D shape. How many faces and how many edges does his new 3D shape have?

Answer (2)

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