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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