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Geometry Properties

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
A logical explanation using statements, postulates, definitions and theorems   Proof  
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Any geometric idea we assume to be true.   Postulate  
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Any geometric idea that can be proved.   Theorem  
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If x = −4, then x + 4 = −4 + 4   Addition Property of Equality  
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If r + 1 = 7, then r + 1 − 1 = 7 − 1   Subtraction Property of Equality  
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If k/2 =8,then k/2(2)=8(2)   Multiplication Property of Equality  
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15 = 15   Reflexive Property  
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If n = 2, then 2 = n   Symmetric Property  
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If x = 7, then 2x = 2(7).   Substitution  
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If a = b, then a + c= b + c.   Addition Property of Equality  
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a(b + c) = ab + ac   Distributive Property  
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If a = b, then a-c = b-c   Subtraction Property of Equality  
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If a= b then ac = bc   Multiplication Property of Equality  
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If a = b then a/c = b/c   Division Property of Equality  
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a = a   Reflexive Property of Equality  
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If a = b then b = a   Symmetric Property  
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If a = b, then b can be substituted into any expression   Substitution  
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If a = b and b = c then a = c   Transitive Property  
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If x = a and a = y then a = y   Transitive Property  
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Created by: kmconnell10
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