Properties
8x-5-2x=2x+1-2x
subtraction
a line contains at least two points.
postulate 2.3
a=a
reflexive property
T=Ph+2B
surface area of a prism
6x/6=6/6
division
if two lines intersect, then their intersection is exactly one point.
postulate 2.6
if a=b then b=a
symmetric property
v= (1/3)(pi)r2h
volume of a cone
AB+CD= (1/2)AB+(1/2)CD
multiplication
through any three points not on the same lines there is exactly one plane
postulate 2.2
if a=b and b=c then a=c
transitive property
T=2(pi)rh+2(pi)r2
surface area of a cylinder
AB+XY=CD+XY to AB=CD
subtraction
define postulate 2.1
through any two points there is exactly one line
a statement that describes a fundamental relationship between the basic terms of geometry. Accepted without proof.
postulate
volume for a rectangular prism
V=Bh or V=lwh
if PQ=QS and QS=ST then PQ=ST
transitive
define postulate 2.5
if two points lie on a plane, then the entire line containing those points lies in that plane.
define contrapositive
The statement formed by negating both the hypothesis and the conclusion of the converse of a conditional statement.
volume of a pyramid
V=(1/3)Bh or V=(1/3)lwh