Parabola
A special curve, shaped like an arch.
Any point on a parabola is at an equal distance from ...
... a fixed point (the focus), and ...
... a fixed straight line (the directrix)
It is one of the "Conic Sections"
See: Conic Section
- dependent event
- dependent variable
- deposit
- depth
- derivative
- descending order
- determinant
- deviation
- diagonal
- diagram
- diameter
- diamond
- dice
- die
- difference
- difference of squares
- difference quotient
- differential equation
- differentiation
- digit
- digital
- digital clock or watch
- digital root
- dilation
- dimension