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Angle Vocabulary

TermDefinition
acute angle less than 90 degrees
obtuse angle more than 90 degrees
right angle 90 degrees
complementary angles 2 angles that have a sum of 90 degrees
supplementary angles 2 angles that have a sum of 180 degrees
vertical angles share a vertex, are across from one another and are equal
adjacent angles share a vertex, one side, are next to each other and are equal
transversal a line that intersects a set of parallel lines
alternate interior angles angles that are on different sides of the transversal and inside the parallel lines
alternate exterior angles angles that are on different sides of the transversal and outside the parallel lines
corresponding angles angels in the same location around the transversal on different parallel lines
parallel lines 2 lines in the same plane that never intersect
perpendicular lines 2 lines that intersect to form right angles
congruent equal in size
intersect crosses
Created by: mjhunter