prefix tri=three

A shape with three angles

• triangle

• tripod

• trio

A device with three “feet” that holds a camera

• biped

• tripod

• trio

Three people singing or playing music together

• trio

• duo

• triple

Something that has three colors

• trident

• tricolor

• bicolor

A spear with three prongs

• biped

• triple

• trident

three times

• triple

• triplex

• trio

Three babies born at the same time

• twins

• triplets

• trio

A building with three apartments

• triplex

• duplex

• trifocals

A race with three events

• triathlon

• biathlon

• tripod

Glasses with lenses with three different sections

• trifocals

• bifocals

• trident