| A | B |
|---|
| tri | three |
| triad | any group of three closely related things or people |
| triangle | a plane geometric figure with three angles and three sides |
| right triangle | a triangle with one angle at 90 degrees |
| isosceles triangle | a triangle with two sides of equal length |
| equilateral triangle | a triangle with all sides of equal length |
| trident | a three-tooth spear; a symbol of the sea god Neptune |
| tribe | a large family or clan; related families; a group united under one chief; a group of animals |
