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Geometry

geometry terms

Terms

undefined, object
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acute
less than 90 degrees
rays
sides of an angle
straight angle
straight line measuring 180 degrees, two collinear or opposite rays
construction
geometric drawings made using only a straight edge and compass
congruent
when two angles have the same measure
straight edge
used in constructions to make a straight line
adjacent
pair of angles that share a vertex and a side
angle
formed by two non-collinear rays with a common endpoint
compass
used to measure an angle or make a circle
complementary
pair of angles that equal 90 degrees
protractor
used to measure angles
linear pair
pair of angles that are adjacent and form a straight line
angle addition posulate
if R is the interior of
supplementary
pair of angles that equal 180 degrees
vertical
pair of angles formed by two intersecting lines
congruent
vertical angles are always-
right
exactly 90 degrees
perpendicular lines
meet to form right angles
angle bisector
seperates an angle into two congruent angles
degrees
Angles are measured in-
obtuse
more than 90 degrees, less than 180 degrees

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