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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 x-3=7

if the measure of angle A + 20 = 60, then the measure of angle A is 40