Assertion: tetrahedron's base | /r/HasProperty | triangular
Facets:
Source sentences:
text: As you can see from the illustration below, the tetrahedron has a triangular base (any one of the tetrahedron's four faces can be designated to be the base), and three triangular sides that connect the base to the apex.
text: A right tetrahedron is so called when the base of a tetrahedron is an equilateral triangle and other triangular faces are isosceles triangles.
text: If one creates an array of tetrahedrons with 10 tetrahedrons forming a triangular base, then adding 6 tetrahedrons to form the next level up, followed by 3 tetrahedrons at the third level up and finally a single tetrahedron at the fourth level at the top, one creates a larger, stable tetrahedral structure called an isotropic vector matrix (21,24).
text: A tetrahedron has a triangular base and shares edges with 3 other triangular faces, who all share a common "top" vertex (and thus two edges each).
text: If the base of a tetrahedron is an equilateral triangle and the other triangular faces are isosceles triangles then it is called a right tetrahedron.