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Lines, Line Segments, and RaysPowerPoint Presentation

Lines, Line Segments, and Rays

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Lines, Line Segments, and Rays

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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.

B

A

- A line is a group of points on a straight path that extends to infinity.
- You would label this AB or BA

X

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.

D

C

- 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

Can you label it correctly?

A

B

X

Y

Can you label it correctly?

Can you label it correctly?

G

H

- 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!!

B

D

C

A

- Parallel lines are always the same distance apart. They never meet.
- AB ll CD

C

B

D

A

- Lines that meet or cross each other are called intersectinglines.
- AB intersects CD

A

C

D

B

- 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