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4/28/2014

4/28/2014. 11.4 4/28 Corresponding Parts of Similar Triangles p. 52. Proportional Parts Conjecture If 2 triangles are similar, then the lengths of the following are proportional to the corresponding sides: Altitudes Medians Angles bisectors. Angle Bisectors. p. 52L.

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4/28/2014

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  1. 4/28/2014

  2. 11.44/28 Corresponding Parts of Similar Triangles p. 52 Proportional Parts Conjecture If 2 triangles are similar, then the lengths of the following are proportional to the corresponding sides: Altitudes Medians Angles bisectors

  3. Angle Bisectors

  4. p. 52L Angle Bisector/Opposite Sides Conjecture A bisector of an angle in a triangle divides the opposite side into 2 segments whose lengths are in the same ratio as the lengths of the 2 sides forming the angle.

  5. Practice

  6. 4/29/2014

  7. HW Qs? 16.5 22 11 17.1

  8. 8.4 18 17.3 8.4

  9. 11.74/29 Proportional Segments/Parallel Lines p. 53

  10. p. 53L Extended Parallel/Prop.Conjecture If 2 or more lines are parallel to the side of a triangle, then the sides are divided proportionally.

  11. p. 67L

  12. 4/30/2014

  13. H6: p. 627 #1-11

  14. 5/1/2014

  15. 5/2/2014

  16. HW Qs? 7. Yes, QRSP ~ XYZW, SF = 2.5 8. X = 1.5 9. X = 7 10. AA, LMN ~ PQN, x = 9 11. 24.5 12. W = 32, x = 24, y = 40, z = 126 D B B B A Yes, AA, ABC ~ DEF, SF=1.5

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