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a pyramid whose base is a regular polygon and whose lateral faces are congruent isosceles triangles
If two solids have the same height and the same cross-sectional area at every level, then they have the same volume.
a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms
The total area of all exterior surfaces of an object and all areas that "can be touched"
the height of a lateral side in a three-dimensional figure or, in a cone, the distance from the base of a cone to its vertex, measured along the lateral surface
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