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Geometry Chapter 9 Section 2

Geometry Chapter 9 Section 2. Arcs and Angles. Central Angle. An angle with the center point as the vertex. Minor Arc. G. Minor Arc. Name a Minor Arc with its two endpoints. J. Major Arc. G. Major Arc. J. Name a Major Arc with an endpoint, a point on the circle and another endpoint.

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Geometry Chapter 9 Section 2

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  1. Geometry Chapter 9 Section 2 Arcs and Angles

  2. Central Angle • An angle with the center point as the vertex

  3. Minor Arc G Minor Arc Name a Minor Arc with its two endpoints J

  4. Major Arc G Major Arc J Name a Major Arc with an endpoint, a point on the circle and another endpoint K

  5. Arc • Measure of an arc = the measure of the degrees of the central angle that intercepts that arc

  6. Angle EWF = 380 Arc EF = 380 Arc EGF = 3600 - 380 F E W J G

  7. Angle EWF = 380 GF is a Diameter Find arc EW Find arc GJE F E W J G

  8. JF = 2(EF) – 5 JG = 2(EF) EG = 2(JG) Find EF F E W J G

  9. Concentric Circles • 2 circles 1 center point

  10. Circles that have congruent radii are congruent circles

  11. Arc Length • The distance of an arc

  12. Find the Arc Length

  13. Find the Arc Length

  14. Find the Arc Length

  15. Find the Arc Length

  16. Do Now • Page 455 problems 19 - 42

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