tetrahedron
Simplest three-dimensional simplex
A tetrahedron is a solid figure with four triangular faces—the simplest possible three-dimensional shape enclosed by flat surfaces.
Each face meets three others at four vertices.
The regular tetrahedron, with all faces equilateral triangles, is one of the five Platonic solids.
The molecule has a tetrahedral shape.
Point where edges converge
- edgeBoundary or sharpness
- faceHead's anterior surface
- triangularThree-cornered in form
- platonic solidCongruent-faced convex shape
simplex · three-dimensional · symmetry · convex · Euclidean · regular · equilateral · apex
Corner points of shapes
- edgesOuter limits or boundaries
- facesFront of heads
- EulerProlific 18th-century mathematician
- graph theoryMathematical study of networks
topology · combinatorics · dimensional · proof · formula · calculation · coordinate · vector
Bonded atomic group
- methaneSimplest alkane fuel
- CH4Methane's molecular formula
- carbonSixth element, atomic symbol C
- bondingForming close connections
orbital · ammonia · silane · phosphine · valence · hybridization · silicon · covalent
Openwork of crossed strips
- crystal structureOrdered atomic arrangement in solids
- diamondCrystallized carbon gemstone
- zirconZirconium silicate crystal
- garnetRed semiprecious stone
quartz · silicate · atomic · mineral · crystalline · facet · twinning · coordination
Marked cubes for chance
- tabletopHorizontal furniture surface
- RPGExplosive launcher or fantasy genre
- Dungeons & DragonsFantasy tabletop roleplaying game
- rollList of names
random · probability · caltrop · four-sided
vertex
Point where edges converge
- edgeBoundary or sharpness
- faceHead's anterior surface
- triangularThree-cornered in form
platonic solid · simplex · three-dimensional · symmetry · convex · Euclidean · regular · equilateral · apex · base
vertices
Corner points of shapes
graph theory · topology · combinatorics · dimensional · proof · formula · calculation · coordinate · vector · matrix
molecule
Bonded atomic group
bonding · orbital · ammonia · silane · phosphine · valence · hybridization · silicon · covalent · electron pair
lattice
Openwork of crossed strips
- crystal structureOrdered atomic arrangement in solids
- diamondCrystallized carbon gemstone
- zirconZirconium silicate crystal
garnet · quartz · silicate · atomic · mineral · crystalline · facet · twinning · coordination · packing
dice
Marked cubes for chance
- tabletopHorizontal furniture surface
- RPGExplosive launcher or fantasy genre
- Dungeons & DragonsFantasy tabletop roleplaying game
roll · random · probability · caltrop · four-sided
- 3D shapescube, sphere, cone, cylinder, pyramid
- geometric shapessphere, triangle, square, cone, rectangle
- shapescircle, square, triangle, rectangle, oval
- foursfour elements, four directions, four corners, four suits, four horsemen
- 3D Geometrycube, sphere, cone, cylinder, pyramid
- Greek mathematicsEuclid, Archimedes, Pythagoras, geometry, theorem
tetrahedronicosahedron
Twenty-faced regular solid
dodecahedron · sphere · cube · octahedron · hexahedron