Prefixes
Prefixes
Geometry Terms
Geometry Terms
Geometry Terms
100
A prefix meaning tri
What is three?
100

A triangle with two congruent sides. Hint: It looks like an icicle. 

Isosceles triangle

100

Two shpaes of exactly the same shape but not neccessarily the same size.

What is similar

100
A polygon that has sides of equal length and angles of equal measure.
What is a regular polygon?
100
The exact matching of shapes or figures on opposite sides. It is a mirror image.
What is symmetry?
200
The prefix meaning five.
What is pent?
200

A triangle with one right angle.

Right triangle
200

An angle that is greater than 90 degrees, but less than 180 degrees.

Obtuse

200

A unit of measure for angles.

What is degree?

200

A figure that has one end point and the other side goes on forever.

Ray

300
A prefix meaning six.
What is hex?
300
An angle that is less than 90 degrees.

Acute angle

300

Two shapes of exactly the same size and shape.

What is congruent

300
A polygon that has sides of equal length and angles of equal measure.
What is a regular polygon?
300
The measure of a region in square units. (length x width)
What is area?
400

A triangle with three equal sides and three equal angles.

Equilateral Triangle 

400
The prefix meaning seven.
What is hept?
400

A closed figure formed by line segments.

What is a polygon?

400
A polygon that has unequal length, unequal measure, or both unequal length and measure.
What is an irregular polygon?
400

A figure that goes on forever in both directions.

Line

500
The prefix meaning eight.
What is oct?
500
A prefix meaning four.
What is quad?
500

These lines intersect to form four, right angles.

Perpendicular Lines

500

These lines could go on forever and will stay equidistant.  

Parallel Lines

500
The distance around an object. The sum of the length of all sides.
What is perimeter?
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