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Geometry

geometry terms

Terms

undefined, object
copy deck
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
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
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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