The line, or the length of the line, joining the centre of a regular polygon to the midpoint of one of its sides. This is also the radius of the inscribed circle.
CP is an apothem.
- TATA-box-binding protein
- tatoray process
- TATP
- Tatum, Edward Lawrie
- tau
- Taube, Henry
- tau particle
- Taupo
- Taurid meteors
- Taurus
- Taurus A
- Taurus Molecular Clouds
- Taurus Moving Cluster
- Taurus rocket
- Taurus X-1
- tautochrone
- tautology
- tautomerism
- Tawhiao
- tax
- taxa
- taxable income
- tax allowance
- tax assessment
- tax avoidance