Elliptic Cylinder
A Cylinder with Elliptical Cross-Section. The parametric equations for an elliptic cylinderof height 
, Semimajor Axis 
, and Semiminor Axis 
are
where
and 
.See also Cone, Cylinder, Elliptic Cone, Elliptic Paraboloid- Triomino
- Triple
- Triple-Free Set
- Triple Jacobi Product
- Triple Point
- Triple Scalar Product
- Triplet
- Trip-Let
- Triple Vector Product
- Triplicate-Ratio Circle
- Trisected Perimeter Point
- Trisection
- Trisectrix
- Trisectrix of Catalan
- Trisectrix of Maclaurin
- Triskaidecagon
- Triskaidekaphobia
- Tritangent
- Tritangent Triangle
- Trivial
- Trivialization
- Trochoid
- Tromino
- True
- Truncate