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| two angles that share a side and vertex |
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| if two angles form a linear pair, then they are supplementary. |
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| angle that adds up to 90 degrees |
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| angle thats measure is less than 90 degrees |
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| angle thats measure is more than 90 degrees and less than 180 degrees |
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| two lines that intersect to form a right angle |
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| two coplanar lines that do not intersect |
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| a bisector that is perpindicular to a segment |
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| a line or ray that divides an angle into two |
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| a circle that is inside a triangle and touches three sides |
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| a circle outside the triangle ane contains all three vertices |
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| a transformation that does not change its size or shape of a figure |
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| every point of a figure moves around a given point known as the center |
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| ever point in a geometric figure is flipped across the |
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| deduction/deductive reasoning |
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| the process of drawing logically certain |
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| when you interchange the hypothesis and the conclusion of a conditional statement |
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| three different conditionals are linked together |
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| two angles in a plane that share a common vertex and a common side but have no interior points in common |
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| a statement using if and only if |
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| an example that proves that a statement, then a conjecture is false |
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| the phrase following the word then in a conditional statement; the final statement of an argument |
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| any relation that satisfies the reflexive |
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| a statement that has been proven to be true deductively |
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