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x>-2 x<-2 x>-1 x<-1 a b c d a b c d b a d c 1,296 324 36 12 Distributive Property Associative Property of Addition Addition Property of Equality Commutative Property of Addition 8.3 8.5 8.8 9.0 a b c d . b c a d 3 4 6 8 a b c d All right angles are congruent. definition of perpendicular lines definition of radius given d=461-62t d=62t-407 d=-62t-461 407+62t region A region B region C region D a b c d 1,643 2,067 2,071 2,291 1 2.5 4.5 6 the x-intercept of a graph the y-intercept of a graph the length of a line segment the slope of a line Lines r and s are parallel Lines r and s are perpendicular Lines r and s are coincident Lines r and s intersect but are not perpendicular a b c d |