Euclidean Geometry Vocabulary

To name a plane, you must use _________ points.

• 1

• 2

• 3

• 4

The three undefined terms in Geometry are...

• Point, Ray, Segment

• Line, Plane, Triangle

• Point, Line, Plane

• Peanut, Butter, Jelly

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

• Parallel lines

• Intersecting lines

• Right lines

• Perpendicular lines

The measure of one angle is 30 degrees. The measure of another angle is 59 degrees. Are these angles complimentary?

• No

• Yes

A triangle with one 90 degree right angle.

• Acute Triangle

• Right Triangle

• Obtuse Triangle

• Equilateral Triangle

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

• Parallel Lines

• Intersecting Lines

• Ray

• Line Segment

Two lines that intersect at 90 degree angles.

• Parallel Lines

• Skew Lines

• Perpendicular Lines

• Line Segment

Two lines in the same plane that will never intersect

• Parallel Lines

• Skew Lines

• Perpendicular Lines

• Line Segment

A triangle with three congruent sides

• Equilateral Triangle

• Isosceles Triangle

• Scalene Triangle

• Right Triangle

A triangle with two congruent sides

• Equilateral Triangle

• Isosceles Triangle

• Scalene Triangle

• Right Triangle