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Parallel lines
coplanar and do not intersect. ∥
perpendicular lines
intersect at 90º angles ⟂
skew lines
not coplanar, not parallel, and do not intersect
parallel planes
planes do not intersect
interior angles
3,4,5,6
exterior angles
1,2,7,8
consecutive interior
3,5 and 4,6
consecutive exterior
1,7 and 2,8
alternate interior
3,6 and 4,5
alterante exterior
1,8 and 2,7
corrosponding
1,5 and 2,6 and 3,7 and 4,8
corresponding angles postulate (CAP)
if there are parallel lines and a line in the middle then angles are all equal
consecutive angle theorem (interior and exterior)
supplementary
alternate angle theorem (interior and exterior)
equal to each other
Note 
Flashcard (50)