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23 Cards in this Set
- Front
- Back
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congruent
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two angles having the same measure
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right angle
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an angle with a measure of 90 degrees
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intersecting lines
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two lines that cross and for four angles
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complementary angles
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two angles whos measures have a sum of 90 degrees
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perpendicular lines
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two lines that intersect at right angles
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protracter
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an instrament used to measure angle
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supplementary angles
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two angles whose measures have a sum of 180 degrees
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vertical angles
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two pairs of opposites angles formed by two intersecting lines
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sides of an angle
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the two rays that form an angle
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interior point
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inbetween two lines
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parallel lines
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two lines in the same plain that never intersect
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angle
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the figure formed by two rays with the same endpoint
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ray
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a part of an angle that extends indefinitely in one direction
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transversal
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a line that intersects two or more lines at different points
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linear pairs
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two angles that are adjacent but supplementary
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corrseponding angles
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angles having the same position on two different parallel lines cut by a transversal
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adjacent angles
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two angles share a vertex and a side
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alternate exterior angles
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non adjacent exterior angles found of opposite sides of the transversal
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degrees
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the basic unit by which angles are measured
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alternate interior angles
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non adjacent interior angles found on opposite sides of the transversal
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acute angles
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angles having a measure of more that zero degrees and less than 90 degrees
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obtuse angles
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angles having a measure of more than 90 degrees and less that 180
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straight angles
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angle having a measure of 180 degrees
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