Triangle
A 3-sided flat shape with straight sides.
It is a polygon.
See: Polygon
- denominator
- density
- 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