A mathematical statement which we can prove to be true
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Segment addition postulate
Front
If B is between A and C, then AB + BC = AC
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hypothesis
Front
A testable prediction, often implied by a theory
An educated guess
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Congruent
Front
Having the same size and shape
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postulate
Front
something accepted as true without proof; an axiom
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alternate interior angles
Front
angles between 2 lines and on opposite sides of a transversal
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same side exterior angles
Front
two exterior angles on the same side of the transversal
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conclusion
Front
A summary based on evidence or facts
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Supplementary angles
Front
Two angles whose sum is 180 degrees
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Collinear
Front
Points that lie on the same line
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Linear Pair
Front
A pair of adjacent angles whose noncommon sides are opposite rays.
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Line segment
Front
A part of a line with two endpoints
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corresponding angles
Front
Angles formed by a transversal cutting through 2 or more lines that are in the same relative position.
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same side interior angles
Front
two interior angles on the same side of the transversal
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transversal
Front
a line that intersects two or more coplanar lines at different points
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alternate exterior angles
Front
Angles that lie outside a pair of lines and on opposite sides of a transversal.
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converse of a conditional statement
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When the hypothesis and conclusion are switched. The converse of p ➝ q is q ➝ p.
A statement formed by interchanging the hypothesis and the conclusion in a conditional statement.
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Vertical Angles
Front
A pair of opposite congruent angles formed by intersecting lines
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conditional statements
Front
A statement that can be written in if-then form.
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Line
Front
1. A long thin mark on a surface. 2. A continuous extent of length, straight or curved, without breadth or thickness; the trace of a moving point. 3. Long, narrow mark or band.
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Complementary angles
Front
Two angles whose sum is 90 degrees
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Angle bisector
Front
a ray that divides an angle into two congruent angles
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Segment bisector
Front
a segment, ray, line, or plane that intersects a segment at its midpoint
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Midpoint
Front
A point that divides a segment into two congruent segments
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Angle addition postulate
Front
If P is in the interior of <RST, then m<RSP + m<PST = m<RST