Lines and Angles Terra Alta/East Preston School Geometry Unit.
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Transcript of Lines and Angles Terra Alta/East Preston School Geometry Unit.
![Page 1: Lines and Angles Terra Alta/East Preston School Geometry Unit.](https://reader030.fdocuments.in/reader030/viewer/2022032708/56649e725503460f94b70933/html5/thumbnails/1.jpg)
Lines and Angles
Terra Alta/East Preston School
Geometry Unit
![Page 2: Lines and Angles Terra Alta/East Preston School Geometry Unit.](https://reader030.fdocuments.in/reader030/viewer/2022032708/56649e725503460f94b70933/html5/thumbnails/2.jpg)
Ray
Ray--part of a line that has one endpoint and goes on endlessly in the other direction.
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Congruent
Equal in size and shape.
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Degrees
The unit used to measure angles.
70
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Line Segment
A part of a line that has two endpoints.
![Page 6: Lines and Angles Terra Alta/East Preston School Geometry Unit.](https://reader030.fdocuments.in/reader030/viewer/2022032708/56649e725503460f94b70933/html5/thumbnails/6.jpg)
Line
A series of points that goendlessly in both directions.
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Vertex
The point at which two rays join together to form an angle.
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Obtuse Angle
An angle that measures morethan 90 degrees.
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Acute Angle
An angle that measuresless than 90 degrees.
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Right Angle
An angle that measures90 degrees.
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Straight Angle
An angle that measures180 degrees. (a.k.a. straightline)
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Parallel Lines
Two lines that are equaldistance apart and willnever intersect.
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Perpendicular Lines
Two lines that intersect toform two right angles.
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Complimentary Angles
Two angles thatadd up to 90 degrees.
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Supplementary Angles
Two angles thatadd up to 180 degrees.
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*****Reminders******
SupplementaryStraight angleComplimentaryCorner
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***Reminders****
means angle
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B R
D E F
Q S
BEF DER QRS DEF BER
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CIRCLESRadius: a line segment whoseendpoints are thecenter of a circleand a point on thecircle.
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Diameter
A line segmentthat passes
through the center of acircle and has endpointson the circle.
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Arc
ABA
B
Part of a circle
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The End