Coplanar
Three noncollinear points determine a plane and so are trivially coplanar. Four points are coplanar Iff the volumeof the Tetrahedron defined by them is 0,
- Transformation
- Transitive
- Transitive Closure
- Transitive Reduction
- Transitivity Class
- Translation
- Translation Relation
- Transpose
- Transpose Map
- Transposition
- Transposition Group
- Transposition Order
- Transversal Array
- Transversal Design
- Transversal Line
- Transylvania Lottery
- Trapdoor Function
- Trapezium
- Trapezohedron
- Trapezoid
- Trapezoidal Hexecontahedron
- Trapezoidal Icositetrahedron
- Trapezoidal Rule
- Traveling Salesman Constants
- Traveling Salesman Problem