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

A part of a line that starts at a fixed point (called an endpoint) and extends infinitely in one direction.

What is a ray?

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? (Whole Number is acceptable)


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

A polygon with three equal-length sides and three equal interior angles, each measuring 60 degrees.

DAILY DOUBLE!!!!!!!!!!!!!!!

What is an equilateral triangle?



DAILY DOUBLE!!!!!!!!!!!!!!!

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 segment that passes through the center of a circle or sphere, connecting two opposite points on its edge.

What is diameter? 

400

A prefix that means four. 

What is quad? 

400

Compares two or more quantities, showing their relative sizes or how many times one number contains another.

What is ratio?

400

A flat, 2D closed geometric figure with three or more straight sides and vertices (corners)

What is a polygon.

400

Lines, planes, or surfaces that are equidistant at all points and never intersect.

What is parallel? 

400

Intersecting or forming a right angle. 

What is perpendicular? 

500

A prefix that means five. 

What is quint? 

500

A point where two or more lines, rays, line segments, or edges meet.



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What is a vertex? 



DAILY DOUBLE!!!!!!!!!!!!!!!!

500

Refers to figures, shapes, or objects that are identical in form and size, allowing them to perfectly overlap via rotation, reflection, or translation.  

What is congruent? 


500

The line segment connecting the center of the circle to any point on its boundary (circumference).

What is radius.

500

The sum of the interior angles of a triangle.

What is 180 degrees? 

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