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Angles&Polygons

MVMS MSM2 Angles and Polygons Vocab

QuestionAnswer
acute angle less than 90 degrees
obtuse angle between 90 degrees and 180 degrees
right angle exactly 90 degrees
straight angle exactly 180 degrees
complementary angles two angles that are 90 degrees
supplementary angles two angles that are 180 degrees
vertical angles opposite angles around a vertex *congruent
adjacent angles two angles that share a common side "next to"
alternate interior angles inside the parallel lines and opposite sides of the transversal *congruent
alternate exterior angles outside the parallel lines and opposite sides of the transversal *congruent
corresponding angles on the same side of the parallel lines and the transversal *congruent
triangle 3 sided polygon
quadrilateral 4 sided polygon
pentagon 5 sided polygon
hexagon 6 sided polygon
heptagon 7 sided polygon
octagon 8 sided polygon
nonagon 9 sided polygon
decagon 10 sided polygon
transversal line a line that intersects two parallel lines