Basic Geometry Vocab
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20 Terms
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Point
location in space (points are dimesionless)
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Line
at least 3 points to connect to create flat surface (continues forever in all directions) (2D)
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Colinear
points on the same line
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Coplanar
points together on the same plane
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Line Segment
a position of a line that consists of 2 end points and all points between them
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Ray
position of a line with one end point and extends forever in one direction
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Angle
formed by 2 rays w. a common (same) endpoint
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Sides (what are the 2 ray names?)
the 2 rays
\-initial ray/side
\-terminal ray/side
\-initial ray/side
\-terminal ray/side
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Vertex
common endpoint
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Angle Measure
created by a rotation of the terminal ray around the vertex
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Degrees
most common unit of angle measure
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Positive Angle
counter clockwise rotation of terminal side
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Negative Angle
clockwise rotation of terminal side
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Acute Angle
Between 0-90 degrees
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Right Angle
90 degrees
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Obtuse Angle
between 90-180 degrees
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Straight Angle
180 degrees
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Complimentary Angles
Two angles that add up to 90 degrees.
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Supplementary Angles
Two angles that add up to 180 degrees.
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Standard Position
Initial ray is on the positive x-axis and if the terminal ray has a positive angle (counter clockwise motion)
Note 
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