最終更新日：2024/07/30

(geometry) A non-regular tetrahedron whose four faces are congruent acute-angled triangles.

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disphenoid

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元となった辞書の項目

disphenoid

noun

(geometry) A non-regular tetrahedron whose four faces are congruent acute-angled triangles.

The disphenoid is a polyhedron with two different types of faces.

意味（1）

(geometry) A non-regular tetrahedron whose four faces are congruent acute-angled triangles.

The mineral chalcopyrite commonly crystallizes in disphenoids that are very difficult to distinguish from tetrahedrons.