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# Lines, Line Segments, and Rays - PowerPoint PPT Presentation

Lines, Line Segments, and Rays. By Mr. Bales. Objective. By the end of the lesson, you will be able to identify, describe, and classify lines, line segments, and rays. Standard 4MG3.1 - Students will identify lines that are parallel and perpendicular. B. A. What in the World are Lines ?.

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Presentation Transcript

### Lines, Line Segments, and Rays

By Mr. Bales

• By the end of the lesson, you will be able to identify, describe, and classify lines, line segments, and rays.

• Standard 4MG3.1 - Students will identify lines that are parallel and perpendicular.

A

What in the World are Lines?

• A line is a group of points on a straight path that extends to infinity.

• You would label this AB or BA

Y

• Aline segmentis a part of a line that has two end points.

• How many end points Natalie?

• The two end points of the line segment are used to name the line segment. This line segment is called segment XY or YX.

C

Wow! Great Question Ty!! He asked, “What are Rays?

• A ray is part of a line. It has one end point and extends to infinity in one direction.

• A ray is named starting with its end point first and then any other point on the ray second.

• So, it would be labeled CD

A

B

X

Y

Can you label it correctly?

Can you label it correctly?

G

H

Pop Quiz!!!! No Need to Thank Me! It’s My Pleasure!

• What is this called….

• What is this called…

• What is this called…

• We can describe lines, rays, and line segments by the way they meet or cross each other.

• Let’s hear from someone know as they describe a couple of line segments.

• Mrs. Benson!!

D

C

A

Parallel Lines

• Parallel lines are always the same distance apart. They never meet.

• AB ll CD

B

D

A

Intersecting Lines

• Lines that meet or cross each other are called intersectinglines.

• AB intersects CD

C

D

B

Perpendicular Lines

• Lines that meet or cross each other to form right angles are called perpendicular lines.

• AB CD

• Page 396 - # 6 - 20

• Get them all correct, No Math Homework