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Math Vocab

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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Word
Definition
Ray   A line with an endpoint  
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Angle   Two rays with a common endpoint  
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Vertex   then common endpoint  
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Acute Angle   An angle that measures less than 90º  
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Right Angle   An angle that easures exactly 90º  
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Obtuse Angle   An angle that measures greater than 90º and less than 180º  
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Straight Angle   An angle that measures exaclty 180º  
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Complementary Angle   Two angles when added together add up to 90º  
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Supplementary Angle   Two angles when added together add up to 180º  
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Congruent   Two angles have the same measure=≈ means "is congruent to"  
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Bisects   A ray that divides an angle into two congruent angles, bisects the angle  
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Angle Bisect   the ray is the ________  
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