points, rays, lines & segments

Points, Rays, Lines & Segments

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Points, Rays, Lines & Segments. B. Point B. Y. X. Line Segment XY. X. Y. Line Segment YX. D. C. Line Segment CD. M. N. Line NM. N. M. Line MN. B. A. Ray AB. A. B. Ray BA. Naming & classifying angles. Angles. - PowerPoint PPT Presentation

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Points, Rays, Lines & Segments

Point B

Line Segment XY

Line Segment YX

Line Segment CD

Line NM

Line MN

Ray AB

Ray BA

Naming & classifying angles

Angles

An angle is formed when two rays have a common vertex.

An angle is made up of at least three points.

We can name and angle using a number or three letters

Angles

Let’s watch this quick video on naming angles:

http://www.khanacademy.org/math/geometry-1/core-geometry/v/angle-basics

Acute Angles

Measures less than 90 degrees

1< 2

< 1

Right Angle

Measures 90 degrees

Q R

< PQR or < RQP

< RPQ or < QPR

Right Angle

Measures greater than 90 degrees

< 3

< ABC or <CBA A

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