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Chapters 1 through 6

Inductive Reasoning

Based on patterns you observe.

Conjecture

A conclusion you reach using inductive reasoning.

Counterexample

An example which the conjecture is INcorrect.

Point

A location.

Space

Defined set of all points.

Collinear Points

Points that lie on the same line.

Segment

Part of a line consisting of two endpoints and all points between them.

Ray

Part of line consisting one endpoint and all points of line on one side of endpoint.

Postulate or Axiom

An accepted statement or fact.

Plane

Flat surface with no thickness.

Parallel Planes

Planes DO NOT intersect.

Parallel Lines

Coplanar lines DO NOT intersect.

Opposite Rays

Two collinear rays with the same endpoint.

Line

A series of points that extends in two opposite directions without end.

Coplanar

Points and lines in the same plane.

Skew Lines

Noncoplanar, not parallel and DO NOT intersect.

Adjacent Angles

2 coplanar angles /w/ common side, vertex, + no common interior points.

Vertical Angles

2 angles whose sides re opposite rays.

Supplementary Angles

2 angles measures sun to 180.

Midpoint

A point that divides the segment into 2 congruent segments.

Congruent Segment

2 segments /w/ the same length.

Congruent Angles

Angles /w/ same measure.

Complementary Angles

2 angles measures sum to 90.

Angle

Formed by 2 rays /w/ same endpoint.

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