A poker hand containing 3 cards of the same rank. Examples include 3 Aces, 3 Queens, 3 fives

The equation of a parabola passing through 3 two-dimensional points

A set of 3 equations with 3 unknown variables

Any three-dimensional point. Points located in R³. Example: (x, y, z)

A right triangle with another angle measuring 30 degrees, and the last angle measuring 60 degrees.