geometry 9/24 Flashcards
test 9/25
supplementary angles
angles that add up to 180*
complementary angles
angles that add up to 90*
straight angles
180* straight line
acute angles
angles less than 90*
obtuse angles
angles greater than 90* but less than 180*
congruent angles
angles that have equal measures
angle bisector
ray that divides an angle into 2 congruent angles
adjacent angles
common vertex but no common points
vertical angles
2 nonadjacent angles that are formed by intersecting lines
(bow tie angle/always congruent)
linear pair
adjacent, supplementary angles that form 180*
inverse statements
if not p, than not q
converse statement
if q, than p
contrapositive
if not q, than not p
2 adjacent angles that form a straight line
linear pair
2 angles that have a common endpoint and no other points in common
adjacent angle
if 1 angle is 180*
straight angle
if 2 angles add up to 180*
supplementary angles
if 2 angles add up to 90*
complementary angle