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14 Cards in this Set
 Front
 Back
definition of a segment bisector

segment bisector intersects a segment at its midpoint


reverse definition of a segment bisector

any line that intersects a segment at its midpoint is the segment bisector


definition of a midpoint

midpoint devides a segment into 2 congruent segments


reverse definition of a midpoint

any point that divides a segment into 2 congruent segments is the midpoint


definition of an angle bisector

angle bisector divides an angle into 2 congruent angles


reverse definition of an angle bisector

any ray that divides an angle into 2 congruent angles is the angle bisector


definition of perpendicular lines

perpendicular lines intersect to form right angles


reverse definition of perpendicular lines

any two lines that intersect to form right angles are right angles


definition of complementary angles

complementary angles are 2 angles that unite to form a right angle


reverse definition of complementary angles

any two angles that unite to form a right angle are complementray


definition of supplementary angles

supplementary angles are 2 angles that unite to form a straight line


reverse definition of supplementary angles

any 2 angles that unite to form a straight line are supplementary


Addition property

if x=7, then x + 3 = 10
if AB =3 and BC=5, then AB + BC = 3 + 5 

subtraction property

if x = 10, then x3=7
if the measure of angle A + 20 = 60, then the measure of angle A is 40 