角かく錐すい台だい

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Meanings

1

noun

truncated pyramid

A geometric solid formed by cutting off the top of a pyramid with a plane parallel to the base. Used in mathematics and technical contexts.

angle, corner, square

錐auger, drill, awl

台pedestal, a stand, counter for machines and vehicles

角かく錐すい
角錐 is a full pyramid, while 角錐台 is a truncated pyramid with the top cut off.
円えん錐すい台だい
円錐台 is a truncated cone, the circular counterpart of 角錐台.

Compound of 角錐 (pyramid) and 台 (platform, base), referring to the shape formed by cutting off the top of a pyramid.