Unit 1 Vocabulary

An exact location in space that has no width, length, or depth

• Angle

• Ray

• Point

• Line

A geometric object that is straight, has no thickness, and contains infinitely many points

• Line segment

• Line

• Ray

• Circle

A line segment is...

• part of a line that begins at one endpoint and extends forever in one direction

• formed by two rays that have a common endpoint

• a geometric object that is straight and has infinitely many points

• part of a line that consists of two endpoints and all the points between them

A ray is...

• part of a line that begins at one endpoint and extends forever in one direction

• formed by two rays that have a common endpoint

• a geometric object that is straight and has infinitely many points

• part of a line that consists of two endpoints and all the points between them

An angle is...

• part of a line that begins at one endpoint and extends forever in one direction

• formed by two rays that have a common endpoint

• a geometric object that is straight and has infinitely many points

• part of a line that consists of two endpoints and all the points between them

True or False: Parallel lines intersect at a 90-degree angle.

• True

• False

True or False: Perpendicular lines intersect at a 90-degree angle.

• True

• False

The set of all points equidistant from a point, called the center

• Circle

• Line

• Angle

• Line Segment

Check all that apply: A rectangle is a...

• Polygon

• Rhombus

• Quadrilateral

• Square

A polygon is a closed figure made up of at least ____ line segments.

• 2

• 3

• 4

• 5