25 vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| acute angle | less than 90
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| congruent angle | angles with the same measures
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| coplanar | points and lines in the same plane
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| midpoint | a point that divides a segment into two congruent
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| perpendicular lines | intersect to form right angles
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| ray | a part of a line that consists of an initial point and all points on the line that lie on one side of the initial point
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| space | boundless 3-dimensional set of all points.
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| angle | is two rays that are connecte at their end points
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| congruent segments | two segments with the same length
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| counterexample |
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| obtuse angle | grather than 90
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| plane | is flat surface that has no thickness, it extends without end in all directions
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| right angle | exactly 90 d
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