interim parallel lines Flashcards
parallel lines
coplanar lines which never intersect
skew
noncoplanar lines which never intersect
parallel planes
planes which never intersect
transversal
line which intersects 2 or more coplanar lines in one point on each line
corresponding angles
angles in the same relative positions where lines are cut by the transversal
alternate interior angles
angles between the lines on the interior on opposite sides of the transversal which are not linear pairs
same-side interior angles
angles between the lines on the same side of the transversal
(postulate 10)
if ______ lines are cut by a transversal, corresponding angles are ______
corr angles congruent
parallel, congruent
(th 3-2)
if ______ lines are cut by a transversal, alternate interior angles are ______
ai angles congruent
parallel, congruent
(th 3-3)
if ______ lines are cut by a transversal, same-side interior angles are ______
ssi angles supp
parallel, supplementary
(th 3-4)
if a transversal is perpidicular to one of two parallel lines it is ______ to the other
duel perpendiculars th
perpendicular
(post 11)
if two lines are cut by a transversal and corresponding angles are ______, then the lines are ______
conv corr angles congruent
congruent, parallel
(th 3-5)
if two lines are cut by a transversal and alternate interior angles are ______, then the lines are ______
conv ai angles congruent
congruent, parallel
(th 3-6)
if two lines are cut by a transversal and same-side interior angles are ______, then the lines are ______
conv ssi angles supp
supplementary, parallel
(th 3-7)
if two coplanar lines are perpendicular to the same line, then the lines are ______
conv duel perpendiculars
parallel
