a long distance race that has three parts swimming bycycling and running
Triathlon
a series of three movies or novles that are closely related and involve the same characters.
Trilogy
a period of three months
trimester
a fishing spear that has three points and looks like a large fork
Trident
a flat shape that had 4 sides and 4 angles.
quadrangle
a group of 4 singers and 4 musicians who preform together
Quartet
A US customnary unit of mesurement for liquids
Quart
A flat shape that has five sides and five corners
Pentagon
A shape that is like a star with five points formed by 5 straight lines
Pentagram
One of five babies that are born at the same time and to the same mother
Quintuplet