types of angles Flashcards
corresponding angles
-2 angles that form an F pattern within the transversal
-will always have the same measurements
alternate (interior) angles
-2 angles that form a Z pattern within the transversal
-formed on opposite sides of the transversal and inside the two lines
-will always have the same measurements
co-interior angles
-2 angles that form a C pattern within the transversal
-will not necessarily have the same measurements
-sum will add up to 180 degrees
-on the same side of the transversal
opposite angles
-2 angles that are opposite each other
-will have the same measurements
alternate exterior angles
-2 angles that are outside the parallel lines but on either side of the transversal
transversals
-a line or line segment that crosses two or more parallel lines
-when this happens, at least 8 angles are formed
perpendicular lines
-lines that intersect to form 90 degree angles
parallel lines
-lines that never meet and are always the same distance apart
formula
(n-2) x 180 = polygon’s interior angles added up