Geometry Intro Vocabulary

Definition of point is...

• a location with no size or shape

• a collection of points with no thickness or width

• Part of a line that has two endpoints

• Line that extends indefinitely in one direction

Definition of ray is...

• a location with no size or shape

• a collection of points with no thickness or width

• Part of a line that has two endpoints

• Line that extends indefinitely in one direction

Definition of segment is...

• a location with no size or shape

• a collection of points with no thickness or width

• Part of a line that has two endpoints

• Line that extends indefinitely in one direction

Definition of line is...

• a location with no size or shape

• a collection of points with no thickness or width

• Part of a line that has two endpoints

• Line that extends indefinitely in one direction

Defintion of collinear is...

• A flat surface made up of points that extends indefinitely in all directions

• Points that lie on the same line

• Points that lie on the same plane

• Segments that have the same length

Defintion of plane is...

• A flat surface made up of points that extends indefinitely in all directions

• Points that lie on the same line

• Points that lie on the same plane

• Segments that have the same length

Defintion of congruent segments is...

• A flat surface made up of points that extends indefinitely in all directions

• Points that lie on the same line

• Points that lie on the same plane

• Segments that have the same length

Defintion of coplanar is...

• A flat surface made up of points that extends indefinitely in all directions

• Points that lie on the same line

• Points that lie on the same plane

• Segments that have the same length

The definition of perpendicular is...

• The point on a segment that divides it into two congruent segments

• Segment, line, or plane that intersects a segment at its midpoint

• Line, segment, or ray that is perpendicular to a segment at its midpoint

• Two lines that intersect at a 90 degree angle (right angle)

The definition of midpoint is...

• The point on a segment that divides it into two congruent segments

• Segment, line, or plane that intersects a segment at its midpoint

• Line, segment, or ray that is perpendicular to a segment at its midpoint

• Two lines that intersect at a 90 degree angle (right angle)