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29 Cards in this Set
- Front
- Back
Reasoning that is based on patterns you observe. If you observe a pattern in a sequence, you can use inductive reasoning to tell what the next terms in the sequence will be.
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inductive reasoning
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A conclusion you reach using inductive reasoning.
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conjecture
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A particular example or instance of the statement that makes the statement false.
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counterexample
Ex. Statement: If the name of a state begins with a W, then that state does not border on an ocean Countrexample: Washington |
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Represented by a small dot on a line and is named by a capital letter
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Point
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Defined as the set of all points.
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Space
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A series of points that extends in two opposite directions without end.
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line
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Points that lie on the same line are
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collinear points
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A flat surface that has no thickness. Contains many lines and extends without end in the directions of all its lines.
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plane
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Points and lines in the same plane
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coplanar
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An accepted statment of fact
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postulate or axiom
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The part of a line consisting of two endpoints and all points between them.
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segment
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The part of a line consisting of one endpoint and all the points of the line on one side of the endpoint.
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ray
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Two collinear rays with the same endpoint. They always form a line.
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opposite rays
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Coplanar lines that do not intersect
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parallell lines
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Noncoplanar, they are not parallel and do not intersent
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skew lines
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Two segments with the same length
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congruent segments (=)
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The point that divides a segment into two congruent segments
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midpoint
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Formed by two rays with the same endpoint
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angle
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Angle that is less that 90 degrees
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acute angle
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Angle that is 90 degrees
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right angle
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Angle that is less than 180 degrees
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obtuse angle
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Angle that is 180 degrees
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straight angle
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Angles with the same measure
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congruent angles
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A straight edge and a compass to draw a geometric figure.
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construction
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A geometric tool used to draw circles and parts of circles called arcs.
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compass
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Two lines that intersect to form rights ancles.
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perpendicular lines
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A line, segment, or ray that is perpendicular to the segment at its midpoint, therby bisecting the segment into two congruent segments
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perpendicular bisector
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A ruler with no markings on it.
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straight edge
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A ray that divides an angle into two congruent coplanar angles.
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angle bisector
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