Euclidean Geometry Vocabulary

Front

To name a plane, you must use _________ points.

Back

3

Front

The three undefined terms in Geometry are...

Back

Point, Line, Plane

Front

Two lines that intersect and form 90 degree angles are known as...

Back

Perpendicular lines

Front

Are angles measuring 30 degrees and 59 degrees complementary?

Back

No

Front

A triangle with one 90 degree right angle.

Back

Right Triangle

Front

Two or more lines that share a common point of intersection.

Back

Intersecting Lines

Front

Two lines that intersect at 90 degree angles.

Back

Perpendicular Lines

Front

Two lines in the same plane that will never intersect

Back

Parallel Lines

Front

A triangle with three congruent sides

Back

Equilateral Triangle

Front

A triangle with two congruent sides

Back

Isosceles Triangle