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Published byBlake Cooper Modified over 9 years ago
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Geometry Notes Sections 2-6
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Solve the following equation: m – 17 = 8
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Solve the following equation:
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-6x + 33 = 0
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Solve the following equation: 3(x - 2) = 42
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What you should learn How to use algebra to write two-column proofs How to use properties of equality in geometry proofs
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Vocabulary Deductive argument Two-column proof Formal poof
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Properties of Equality for Real Numbers Addition/Subtraction Properties of Equality Multiplication/Division Properties of Equality Substitution Property of Equality Distributive Property You can add/subtract the same value from both sides of an equation You can multiply/divide both sides of an equation by the same value You can replace one thing with another of EQUAL value a(b + c) = ab + ac AND ab + ac = a(b + c)
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Reflexive Property of Equality Symmetric Property of Equality Transitive Property of Equality A number is equal to itself. a = a You can switch the left and right sides of an equation If a = b then b = a If a = b and b = c then a = c
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Have you learned.... How to use algebra to write two-column proofs? How to use properties of equality in geometry proofs? Assignment: Worksheet 2.6
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