Vocab words for math test
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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| point | location
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| line | 2 or more points (on a line) that extends forever in both directions
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| plane | flat surface with 3 or less points
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| co-linear points | points on same line
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| co-planar points | points on same plane
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| line segment | can be measure and has endpoints
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| ray | part of a line that goes forever in one direction
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| opposite rays | 2 rays with same endpoint and go forever in opposite directions
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| angle | 2 non co-linear rays with common endpoint
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| vertex | common endpoint of an angle
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| obtuse angle | greater than 90 degrees less than 180 degrees
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| acute angle | less than 90 degrees greater than 0 degrees
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| right angle | exactly 90 degrees
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| straight angle | exactly 180 degrees
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| adjacent angles | angles that share an endpoint and a side
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| angle bisector | ray that divides an angle into 2 congruent angles
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| segment bisector | segment line or plane that intersects at a segments midpoint and forms 2 congruent segments
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| vertical angles | 2 nonadjacent angles formed by 2 intersecting lines and are congruent
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| linear pair | 2 adjacent angles that create a 180 degree angle
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| complementary angles | 2 angles sum to 90 degrees
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| supplementary angles | 2 angles sum to 180 degrees
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| counterexample | example that shows a statement is false
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| theorem | statement as a result of other true statements
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| postulate | rules accepted without proof
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| conjecture | unproven statement based on observations
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| congruent | same exact size shape and/or measure
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| midpoint | divides segment into 2 congruent segments
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| area | square units that cover a surface
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| circumference | distance around circle
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| degree | measure angles and arcs
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| volume | space a 3-D figure fills
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| surface area | sum of all face and side areas
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| perimeter | sum of lengths of all sides of a figure
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| parallel | lines with same slope
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| perpendicular | lines with opposite reciprocal slope
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Created by:
edenbreslauer
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