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# Geometry Chapter 3

TermDefinition
parallel lines never intersect, go in the same direction, in the same plane
skew lines never intersect, go in different directions, different planes
transversal line that intersects 2 or more coplanar, parallel lines
interior angles inside the parallel lines
exterior angles outside the parallel lines
alternate interior angles 2 non-adjacent interior angles on opposite sides of transversal, make a Z, congruent
alternate exterior angles 2 non-adjacent exterior angles on opposite sides of transversal, congruent
same side interior angles 2 interior angles on the same side of transversal, make a C, suppl
corresponding angles 1 interior and 1 exterior angle , non-adjacent , on the same side of transversal, make an F, congruent
if a line is perpendicular to one of two parallel lines then it is perpendicular to the other
slop-intercept form y=mx+b
proof with parallel lines in given ll--> etc.
proof with parallel lines in prove etc. --> ll as the last step
Created by: ts2819
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