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GBK Geometry. Jordan Johnson. Today’s plan. Greeting Review Asg #83: Ch . 14, Lesson 6 (pp. 605-611): Set I Exercises 1-11, 26-30. Set II Exercises 31-33. Bonus: Set II Exercises 57-65. Lesson : Inscribed Angles Homework / Questions Clean-up. Pick a point on the major arc.
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GBK Geometry Jordan Johnson
Today’s plan • Greeting • Review Asg #83: Ch. 14, Lesson 6 (pp. 605-611): • Set I Exercises 1-11, 26-30. • Set II Exercises 31-33. • Bonus: Set II Exercises 57-65. • Lesson: Inscribed Angles • Homework / Questions • Clean-up
Inscribed Angles Inscribe: to place vertex/vertices on a circle inscribed angle
Inscribed Angles inscribed angle = arc measure⁄2 = central angle⁄2 A = mQP⁄2 = Z⁄2
Right Triangle Review • If AO = 9 and OB = 15, find OC. • If AO = 8 and OC = 24, find BC.
Ch. 11 Similar Triangles Review • If AO = 9 and OB = 15, find OC. • AO⁄OB = OB⁄OC • 9⁄15 = 15⁄OC • OC = 225⁄9 = 25 • If AO = 8 and OC = 24, find BC. • OC⁄BC = BC⁄AC • 24⁄BC = BC⁄32 • BC2 = (24)(32) = 8*3*8*4BC = 163
Homework • Ch. 11 Test Analysis due Monday, 6/3. • Ch. 11 Re-Test Monday. • Asg#84: Read Ch. 12, Lesson 4 (pp. 504-5); do: • Set I Exercises 1-5, 20-32. • Set II Exercises 33-34. • Bonus: Set II Exercises 43-47. • Due Tuesday, 6/4.
Clean-up / Reminders • Pick up all trash / items. • Push in chairs (at front and back tables). • See you tomorrow!