Chapter 4 Flashcards
(22 cards)
midpoint formula
(x1-x2/2 y1-y2/2)
if tow angles are both sup and congruent then
they form a rt angle
coplanar
pts lines segs and rays on the same line
noncoplanar
pts lines segs and rays that are not on the same line
transversal
line that connects two coplanar lines in 2 distinct pts
alt int angles
interior angles that are diagonal
alt ext angles
exterior angles that are diagonal
corresponding angles
same side of the transversal
slope formula
(y2-y1/x2-x1)
horizontal slope
slope is zero
vertical slope
slope is undefined
positive slope
rising left to right
negative slope
falling left to right
parallel lines then
same slope
perpendicular lines then
opp reciprocal
collinear lines then
same slope
if ss int angles sup then
ll lines
if ss ext angles sup then
ll lines
if alt int angles congruent then
ll lines
if alt ext angles congruent then
ll lines
if corresponding angles congruent then
ll lines
proving a quad a parallelogram
both pairs of opp sides ll both pairs of opp sides ll one pair of opp sides are both congruent and ll both pairs of opp angles congruent the diagonals bisect eachother
