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Warm Up

Warm Up. 1. Solve for arc ABC. 244 . 2. Solve for x and y. 3. Solve for angle 1. x = 105  y = 100 .  1 = 95 . Review HW. Skills Check. Case I: Vertex is AT the center. A. P. C. B. Case II: Vertex is ON circle but not the center. ANGLE. ARC. ARC. ANGLE.

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Warm Up

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  1. Warm Up 1. Solve for arc ABC 244 2. Solve for x and y. 3. Solve for angle 1. x = 105 y = 100 1 = 95

  2. Review HW

  3. Skills Check

  4. Case I:Vertex is AT the center A P C B

  5. Case II:Vertex is ON circle but not the center. ANGLE ARC ARC ANGLE

  6. Case III:Vertex is INSIDE circle A ARC B ANGLE D ARC C

  7. New!

  8. Case IV:Vertex is OUTSIDE circle C ANGLE small ARC A D LARGE ARC B

  9. Ex. 6 Find m1. 1 15° A D 65° B m1 = 25

  10. Ex. 7 Find mAB. mAB = 16 A 27° 70° B

  11. Ex. 8 Find m1. 260° 1 m1 = 80

  12. Tune: If You’re Happy and You Know It • If the vertex is ON the circle half the arc. <clap, clap> • If the vertex is INside the circle half the sum. <clap, clap> • But if the vertex is OUTside, then you’re in for a ride, cause it’s half of the difference anyway. <clap, clap>

  13. Example 1 from page 90 30 x

  14. Example 2 from page 90 x 25

  15. Example 3 from page x 50 20

  16. YOU try 150 67 x

  17. Worksheet Angles from Tangents & Secants 13 problems

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