Parallel Lines & the Triangle Angle-Sum Theorem
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Parallel Lines & the Triangle Angle-Sum Theorem

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This lesson reviews the concepts of parallel lines and the Triangle Angle-Sum Theorem. I deliver this presentation using a tablet laptop in which I am able to write on the screen using a stylus pen. ...

This lesson reviews the concepts of parallel lines and the Triangle Angle-Sum Theorem. I deliver this presentation using a tablet laptop in which I am able to write on the screen using a stylus pen. By working out the solutions with the students, it becomes interactive and engaging.

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Parallel Lines & the Triangle Angle-Sum Theorem Parallel Lines & the Triangle Angle-Sum Theorem Presentation Transcript

  • Review BM112 3-4: Parallel Lines & the Triangle Angle-Sum Theorem Ren Foshee Geometry
    • Benchmark 112:
    • “ I Can apply the properties of parallel lines cut by a transversal to solve problems.”
  • Vocabulary
    • An exterior angle of a polygon is an angle formed by a side and an extension of an adjacent side.
    • Remote interior angles are the two nonadjacent interior angles corresponding to each exterior angle of a triangle.
  • Take Note
  • Example#1
    • Line r is parallel to line t . Find m 5. The diagram is not to scale.
  • Example#2
    • Find the value of the variable if
    • and
  • Example#3
    • Find the values of x and y . The diagram is not to scale.
  • Example#4
    • Find
    • The diagram is not to scale.
  • Example#5
    • Find the value of x for p to be parallel to q .
    • The diagram is not to scale.
  • References
    • Bass, Laurie E. et.al. California Geometry . Pearson Prentice Hall. Boston, MA. 2008.
    • www.phschool.com California Geometry . Pearson Prentice Hall. Boston, MA. 2008.