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21 Cards in this Set
- Front
- Back
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If A=B and B=C, then A=C.
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Transitive Property of Equality
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If A=B, then B=A.
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Symmetric Property of Equality
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A=A
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Reflexive Property of Equality |
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True facts about the diagram that you build upon to reach your goal, the prove statement.
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Givens |
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Line segments that are equal in length.
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Congruent Segments |
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If A=B, then B can replace A in any equation.
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Substitution Property of Equality |
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Transitive Property of Congruence |
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If A=B, then A+C=B+C.
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Addition Property of Equality |
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If A=B, then A–C=B–C. |
Subtraction Property of Equality |
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If point B lies on line segment AC, then AB + BC = AC. |
Segment Addition Postulate
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A(B+C)=AD+BC
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Distributive Property
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Something that cuts an object into two equal parts. It is applied to angles and line segments.
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Definition of a Bisector
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A line that cuts an angle into two equal parts. |
Angle Bisector
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A line which cuts another line segment into two equal parts. |
Line Segment Bisector
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The point of a line segment that divides it into two parts of the same length.
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Definition of a Midpoint
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Angle A = Angle B |
Vertical Angles |
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Theorem: Vertical angles are always congruent. In the figure, Angle 1 is congruent to Angle 3 and Angle 2 is congruent to Angle 4.
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Vertical Angles Theorem |
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either of two angles whose sum is 180° |
supplementary angle |
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either of two angles whose sum is 90° |
complementary angle |
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y=mx+b
where m is the slope and b is the y-intercept. |
equation of a line
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parallel postulate
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