Proving Lines Parallel (G.2d)

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Proving Lines Parallel (G.2d). Objective : SWBAT determine if two lines are parallel (3.3) *hw/hw log/storybook/workbook p. 67. Warm-Up : worksheet 1-18. Homework (day 12)- check odd answers in text: p. 160 (7, 10, 12, 13-16, 17-26, 27-29 ) Bring Graph paper- Leave in notebook
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Proving Lines Parallel (G.2d)Objective :SWBAT determine if two lines are parallel (3.3)*hw/hw log/storybook/workbook p. 67Warm-Up: worksheet 1-18Homework (day 12)- check odd answers in text: p. 160 (7, 10, 12, 13-16, 17-26, 27-29)Bring Graph paper- Leave in notebookQuiz next block/Grade storybookPearson Success due FridayCopy and complete, then put behind your SOL dividerAnswer questions on Unit 1 Test………Story Time…….”Parallel Lines/Transversals”Ways to Prove Two Lines Parallel
  • Show that corresponding angles are equal.
  • Show that alternate interior angles are equal.
  • Show that Alternate exterior angles are equal.
  • Show that consecutive interior angles are supplementary.
  • In a plane, show that the lines are perpendicular to the same line.
  • Two Column Proofs: Statements and Reasons. Every Statement must have a reason and vice-versa (these are justifications). What can you use as reasons? Theorems (VARC), Properties(transitive, reflexive, distributive)Definitions of vocab: complementary, supplementary, congruent, midpoint, Postulates: angle bisector, segment additionGIVENLesson 2-5: Proving Lines ParallelState which lines, if any, are parallel. Justify.mlp67°q113°67°Proving Lines Parallel
  • If two lines are cut by a transversal and
  • corresponding angles are congruent, AB // CD.Lesson 2-5: Proving Lines ParallelProving Lines Parallel
  • If two lines are cut by a transversal and
  • alternate interior angles are congruent, AB // CD.Lesson 2-5: Proving Lines ParallelProving Lines Parallel
  • If two lines are cut by a transversal and
  • Alternate exteriorangles are congruent, AB // CD.Lesson 2-5: Proving Lines ParallelProving Lines Parallel - Postulates &Theorems If two lines are cut by a transversal and consecutive interior angles are supplementary AB // CD.Lesson 2-5: Proving Lines ParallelHomework Answers (day 12)(odd answers are in your textbook)- please check them!!
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