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Angle Vocabulary

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Angle   A figure formed by two rays that have the same endpoint  
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Vertex   a meeting point of two rays that form an angle  
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Acute angle   an angle whose measure is greater than 0 degrees but less than 90 degrees  
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Obtuse angle   an angle whose measure is greater than 90 degrees but less than 180 degrees  
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Right angle   an angle whose measure is equal to 90 degrees  
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Straight angle   an angle that has a measure of 180 degrees  
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Adjacent angle   two angles in a plane that share a common vertex and a common side, but that no common interior points  
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Congruent angles   angles that have the same measure  
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Angle bisector   divides an angle into two congruent angles  
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Vertical angles   the opposite angles formed when two lines intersect; congruent  
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Complementary angles   two angles whose measures have the sum of 90 degrees  
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Supplementary Angles   two angles whose measures have the sum of 180 degrees  
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Linear pair   two adjacent angles whose non-common sides are opposite rays; form a straight line  
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