geometry quiz sec 2.5-2.8

reflexive property

(1 thing) something equals itself

symmetric properyy

(2 things) ex. if <j = <k then <k = <j

transitive or substitution property

(3 things) if x=y and y=z then x=z

post 2.3

a line contains at least 2 points

post 2.4

a plane contains at least 3 non collinear points

postulate

a statement accepted as true without proof

theorem

a statement that has been proven

angle addition postulate

adding 2 adjacent angles together to get a larger angle

segment addition

adding 2 segments on a line and forming a larger segment

supplement theorem

if 2 angles form a linear pair or add up to 180 they are supplementary

post 2.5

if 2 points lie In a plane then the entire line containing those points also lie in the plane

complement theorem

if the non common sides of 2 adjacent angles form a right angle then the angles are complementary angles

postulate 2.1

through any 2 points there is exactly 1 line

postulate 2.2

through any 3 non- collinear points there is exactly 1 plane