pentagonal pyramid


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pentagonal pyramid

[pen′tag·ən·əl ′pir·ə‚mid]
(mathematics)
A pyramid whose base is a pentagon.
References in periodicals archive ?
Using small straws (or coffee stirrers) and pipe-cleaner connectors (or toothpicks and minimarshmallows or raisins), work with your classmates to build the following three-dimensional shapes: a triangular pyramid, a square pyramid, a pentagonal pyramid, and a hexagonal pyramid.