'Statements reasons' diaporamas de présentation

Chapter 4

Chapter 4 . Section 7 : Triangle Congruence: CPCTC. Objectives. Use CPCTC to prove parts of triangles are congruent. . What is CPCTC?.

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Chapter 2.8

Chapter 2.8. Proving Angle Relationships. Concept. Concept. Use the Angle Addition Postulate. Prove that the m<1 = 89 , if m<2 = 56 and m<JKL = 145. J. K. 2. 1. L. Example 1. Prove that the m ? 1 = 104 if m ? 2 = 58 and m ? JKL = 162. Concept. Concept. Example 2.

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Writing Geometric Proofs

Writing Geometric Proofs. Section 4.4. Definition. Proof: showing that a statement must be true using known facts, definitions and theorems. NEVER ASSUME!. Column Proof Format. Statements. REASONS WHY. 1. 2. 3. 4. ?ABC ? ?DEF. 1. 2. 3. 4. SSS,SAS, ASA, AAS, or HL.

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Lesson 5.2 Proving Triangles are Congruent: SSS and SAS

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Lesson 5.3 Proving Triangles are Congruent: ASA and AAS

Lesson 5.3 Proving Triangles are Congruent: ASA and AAS. Pages 250 - 252. Angle -Side-Angle Congruence Postulate ( ASA ). If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent.

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2.8 Proving Angle Relationships

2.8 Proving Angle Relationships. Example. QUILTING The diagram below shows one square for a particular quilt pattern. If m ? BAC = m ? DAE = 20, and ? BAE is a right angle, find m ? CAD. Examples. Statements Reasons. Example. Example.

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Goals

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