Number Prefixes
Definitions
Synonyms
More definitions
Even more definitions
100

A prefix that means 2.  

What is "bi"? 

100
Defined as being less than 90 degrees.

What is acute? 

100

A vocabulary word that is a synonym for "number". 

What is integer? 


100

Next to. 

What is adjacent? 

100

Lines that are the same distance apart and never meet. 

What is parallel? 

200

A prefix that means three. 

What is "tri"? 

200

A number that has no fractions or decimal points. 

What is an integer? 


200

A vocabulary word that is a synonym for "nearby". 

What is adjacent? 

200

The mathematical study of shape, size, and position of figures.

What is geometry? 

200

To cut into two equal or similar pieces.

What is bisect?

300

A prefix that means ten. 

What is deca? (Or dec) 

300

The distance around the outside of a curved object that has no opening. 

What is circumference? 

300

A vocabulary word that is a synonym for "perimeter". 

What is circumference? 

300

Having the same size and shape.

What is congruent?

300

A straight line through the center of a circle or sphere. 

What is diameter? 

400

A prefix that means four. 

What is quad? 

400

A comparison or proportion between different things. 

What is ratio?

400

A vocabulary word that is a synonym for "factual". 

What is empirical. 

400

Flat, level, and horizontal to the horizon.

What is parallel? 

400

Intersecting or forming a right angle. 

What is perpendicular? 

500

A prefix that means five. 

What is quint? 

500

Defined as based or relying on experience, observation, or experiment

What is empirical? 

500

A vocabulary word that is a synonym for "coinciding"? 

What is congruent? 


500

Defined as a true statement that needs no proof; something accepted as true. 

What is axiom? 

500

A statement that can be proven to be true by logical reasoning. 

What is theorem?