# Parallel lines Perpendicular lines and line segments By

Parallel lines, Perpendicular lines, and line segments By: Mr. Dunkleberger Mechanicsville Elementary School

What is a line? • Line- a straight path in a plane that goes on forever in opposite directions Example: • line AB or line BA

What is a point? • point • An exact location in space, usually represented by a dot Example: point A

What is a line segment? • line segment • A part of a line that includes two points, called endpoints, and all of the points between them Example: • line segment AB or line segment BA

What is a ray? • ray • A part of a line, with one endpoint, that continues without end in one direction Example: ray CD

What is a parallel line? • parallel lines • Lines in a plane that never intersect Example:

What is a perpendicular line? • perpendicular lines • Two lines that intersect to form four right angles Example:

ray

. point

line segment

angle

line

right angle

obtuse angle

acute angle

parallel lines

intersecting lines

perpendicular lines

Is the following shape a parallel line, a perpendicular line, or an intersecting line?

Is the following shape a parallel line, a perpendicular line, or an intersecting line?

Is the following shape a parallel line, a perpendicular line, or an intersecting line?

Is the following shape a parallel line, a perpendicular line, or an intersecting line?

Is the following shape a parallel line, a perpendicular line, or an intersecting line?

Is the following shape a parallel line, a perpendicular line, or an intersecting line?

Is the following shape a parallel line, a perpendicular line, or an intersecting line?

Is the following shape a parallel line, a perpendicular line, or an intersecting line?

Is the following a point, a line segment, or a ray?

Is the following a point, a line segment, or a ray?

Is the following a point, a line segment, or a ray?

Is the following a point, a line segment, or a ray?

Is the following a point, a line segment, or a ray?

Is the following a point, a line segment, or a ray?

Is the following a point, a line segment, or a ray?

- Slides: 34