points, rays, lines & segments
DESCRIPTION
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 PresentationTRANSCRIPT
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Points, Rays, Lines & Segments
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B
Point B
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YX
Line Segment XY
![Page 4: Points, Rays, Lines & Segments](https://reader036.vdocument.in/reader036/viewer/2022062517/56813320550346895d99f4c8/html5/thumbnails/4.jpg)
XY
Line Segment YX
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DC
Line Segment CD
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MN
Line NM
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NM
Line MN
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BA
Ray AB
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AB
Ray BA
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Naming & classifying angles
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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
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Angles
Let’s watch this quick video on naming angles:
http://www.khanacademy.org/math/geometry-1/core-geometry/v/angle-basics
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Acute Angles
Measures less than 90 degrees
2
1< 2
< 1
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Right Angle
Measures 90 degrees
Q R
P
< PQR or < RQP
QP
R
< RPQ or < QPR
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Right Angle
Measures greater than 90 degrees
B
< 3
3
C
< ABC or <CBA A