(かくすい)

かくすい
noun
pyramid (geometric)
number
1. pyramid (geometric solid)
A pyramid in the geometric sense — a solid with a polygonal base and triangular faces meeting at a single point. Used for the abstract shape; the Egyptian monument is called ピラミッド.
Draw a square pyramid.
Find the volume of a pyramid.
A pyramid whose base is a triangle is called a triangular pyramid (tetrahedron).

Compound of (かく) (corner; angle) + (すい) (a tapering/awl-like shape). Used almost only in math class and technical contexts.

Compounds

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