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for honors geo. ch 1 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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Question
Answer
point   location, has no size  
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line   set of points extending in opposite direction without end  
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plane   flat surface, has no thickness  
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space   the set of all points  
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collinear points   points that lie on the same line  
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coplanar points   points that lie on the same plane  
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segment   part of a line with 2 end points and all points in between  
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ray   part of a line consisting of 1 endpoint and all points on 1 side of an endpoint  
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opposite rays   2 collinear rays with the same endpoint  
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congruent segments   2 segments with the same length  
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midpoint   point that divides a segment into 2 congruent parts  
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angle   2 rays with the same endpoint  
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acute   angle less than 90  
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obtuse   angle larger than 90, but less than 180  
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right   90  
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straight   180  
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congruent angles   2 angles with the same measure  
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vertical angles   2 angles whose sides are opposite rats  
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adjacent angles   2 angles with a common side, common vertex and no common interior points  
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complementary angles   2 angles where some =90  
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supplementary angles   2 angles whose sum=180  
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