triangular pyramid
Three-sided base cone
A triangular pyramid is a three-dimensional solid with four triangular faces—a triangular base and three triangular sides meeting at an apex.
Also called a tetrahedron.
When all four faces are equilateral triangles, it's a regular tetrahedron: The die was shaped like a triangular pyramid.
Four-faced polyhedron
- polyhedronMulti-faced geometric solid
- vertexPoint where edges converge
- faceHead's anterior surface
- edgeBoundary or sharpness
base · apex · solid · volume · platonic solid · equilateral · isosceles · scalene
Tapering to a tip
- apexUppermost point or culmination
- taperedGradually narrowing in width
- sharpFine-edged, or astute
- peakedReached the summit
faceted · sloped · converging · tip · point · three-sided · tetrahedral · wedge
tetrahedron
Four-faced polyhedron
- polyhedronMulti-faced geometric solid
- vertexPoint where edges converge
- faceHead's anterior surface
edge · base · apex · solid · volume · platonic solid · equilateral · isosceles · scalene · congruent
pointed
Tapering to a tip
peaked · faceted · sloped · converging · tip · point · three-sided · tetrahedral · wedge · corner
Giza
Egyptian necropolis plateau
tomb · burial chamber · limestone · ancient · monument · hieroglyphics · dynasty · Khufu · sandstone · desert
triangle, triangles, triangular, triangularity, triangulate, triangulated, triangulation, pyramid, pyramids