Having or involving three (a)   , countries, or parties is called trilateral.

A triceratops is a dinosaur with three horns-two long (a)   above the eyes & one short horn on the nose.

A (a)   is a three-sided shape.

Trisect means to (a)   into three parts.

Three related plays or novels is called a (a)   .

A race that combines three activities- swimming, bicycling, & (a)   is a triathlon.

Able to (a)   three different languages is called trilingual.

A (a)   is a group of three people or things.

A three-legged stool, table, or stand used to hold things, such as a camera is called a (a)   .