Semilatus Rectum
Given an Ellipse, the semilatus rectum is defined as the distance 
measured from a Focus such that
 | (1) |
and 
are the Apoapsis and Periapsis, and 
is the Ellipse'sEccentricity. Plugging in for 
and 
then gives |  |  | |
|  | (2) |
so
 | (3) |
- Potential Theory
- Pothenot Problem
- Poulet Number
- Power
- Power Center
- Power (Circle)
- Power Curve
- Powerfree
- Powerful Number
- Power Line
- Power Point
- Power Rule
- Power Series
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- P-Polynomial
- p(prime)-Group
- P-Problem
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- Pratt Certificate
- Pratt-Kasapi Theorem
- Precedes