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15 Cards in this Set
 Front
 Back
inductive reasoning

1. look for a pattern
2. make a conjecture (unproven statement based on observations) 3. verify the conjecture 

conjecture

an unproven statement based on observations


colinear points

points that lie on the same line


coplanar points

points that lie on the same plane


intersection

set of points the figures have in common


postulates

rules accepted without proof
synonym=axioms 

axioms

rules accepted without proof
synonym=postulates 

theorems

rules that are proved


distance formula

formula for computing the distance between two points in a coordinate plane


congruent segments

segments that have the same length


angle

2 rays that have the same initial point (vertex)


vertex

initial point of angle


RULER POSTULATE

the points on a line can be matched one to one with real numbers. the real number that corresponds to a point is the coordinate of the point.
The distance between points A and B, written as AB, is the absolute value of the difference between the coordinates of A and B. 

SEGMENT ADDITION POSTULATE

If B is between A and C, then AB + BC = AC. If AB + BC = AC, then B is between A and C


ANGLE ADDITION POSTULATE

if P is in the interior of angle RST, then angle RSP + angle PST = angle RST
