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Geometry

Geometry. Opportunity is missed by most people because it is dressed in overalls and looks like work. Thomas Edison. Today: Homework Check 3.2 Check Up Practice. Yesterday. Opportunity is missed by most people because it is dressed in overalls and looks like work. Thomas Edison.

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Geometry

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  1. Geometry Opportunity is missed by most people because it is dressed in overalls and looks like work. Thomas Edison Today: • Homework Check • 3.2 Check Up • Practice

  2. Yesterday Opportunity is missed by most people because it is dressed in overalls and looks like work. Thomas Edison Assignment: • 3.1-3.2 p. 197 #1-14

  3. 3.2 Check Up 3.1 Check Up Identify the vocabulary term for each pair of angles represented in the picture. 1. 3 and 6 2. 1 and 8 3. 2 and 6 4. 1 and 6 5. 3 and 5

  4. You named angle pairs formed by parallel lines and transversals. • Use theorems to determine the relationships between specific pairs of angles. • Use algebra to find angle measurements. Then/Now

  5. Content Standards G.CO.1 Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc. G.CO.9 Prove theorems about lines and angles. Mathematical Practices 1 Make sense of problems and persevere in solving them. 3 Construct viable arguments and critique the reasoning of others. CCSS

  6. 3.2 Angles and Parallel Lines Objectives: • Properties of parallel lines and transversals • Using properties of parallel lines in proofs Vocabulary: parallel, transversal, corresponding, alternate interior, alternate exterior, consecutive interior

  7. 3.2 Angles and Parallel Lines If 2 parallel lines are cut by a transversal, then: corresponding angles are congruent. alternate interior angles are congruent. alternate exterior angles are congruent. consecutive interior angles are supplementary. corresponding angles alternate interior angles alternate exterior angles consecutive interior angles 2 1 3 4 6 5 7 8

  8. 2x + 4 3.3 Parallel Lines and Transversals What type of angles do you have? Alternate Exterior x = 53

  9. y + 20 x = 105 x y = 85

  10. 100o 3.3 Parallel Lines and Transversals How many angles in the diagram have a measure of 100o?

  11. 2 3 1 Reasons Statements 1. Given  ALWAYS 4. Transitive Property of Congruency.

  12. Geometry Assignment: • 3.2 p. 183 #5, 8, 25, 49 Opportunity is missed by most people because it is dressed in overalls and looks like work. Thomas Edison

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