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2-20-13 Parallel Lines and Transversals

Place interim and contract on your desk. 2-20-13 Parallel Lines and Transversals. Essential Question: Why would you need to know about the relationships of the angles formed when parallel lines are cut by a transversal ?. BOP - Solve . 1. n + 45 = 180 2. 75 + x = 90

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2-20-13 Parallel Lines and Transversals

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  1. Place interim and contract on your desk . 2-20-13 Parallel Lines and Transversals Essential Question: Why would you need to know about the relationships of the angles formed when parallel lines are cut by a transversal? BOP - Solve. 1. n + 45 = 180 2. 75 + x = 90 3. 3y = 2y + 90 4. 2a + 15 = a + 45 DWP: On next slide

  2. DWP JUSTIFY YOUR ANSWER!

  3. Angle Relationships and Parallel Lines PRE-ALGEBRA LESSON 9-2 Solutions 1.n + 45 = 180 2. 75 + x = 90 n + 45 – 45 = 180 – 45 75 – 75 + x = 90 – 75 n = 135 x = 15 3. 3y = 2y + 90 4. 2a + 15 = a + 45 3y – 2y = 2y – 2y + 90 2a – a + 15 = a – a + 45 y = 90 a + 15 = 45 a + 15 – 15 = 45 – 15 a = 30 9-2

  4. DWP 20 cm

  5. VOCABULARY CARD CHECK If you have test corrections or WBW #1 corrections, turn them in.

  6. ADD TO VOCABULARY CARDS Symbol for congruence

  7. 1 3, 2 4, 5 7, 6 8 2 7, 6 3 Angle Relationships and Parallel Lines PRE-ALGEBRA LESSON 9-2 In the diagram, p || q. Identify each of the following. a. congruent corresponding angles b. congruent alternate interior angles 9-2

  8. JUSTIFY YOUR ANSWER!

  9. ANNOTATE THE DIAGRAM

  10. COMPLETE PROBLEMS ON D91 WORKSHEET And Kuta Software - Exterior Angle Theorem

  11. EXIT TICKET-Draw the picture below and answer Questions 1, 2, 3; Use the appropriate symbol for congruence. 1 5, 2 6, 4 8, 3 7 4 7, 2 5 PRE-ALGEBRA LESSON 9-2 In the diagram, d e. 1.Find the m 5 if m 8 is 35°. 2. Name the congruent corresponding angles. 3. Name the congruent alternate interior angles. 145° Homework: Finish corrections; work on problems in textbook due Friday; Quiz tomorrow.

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