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Warm UP

Warm UP. In your own words, define: 1) intercepted arc 2) secant 3) chord. Objective. SWBAT use theorems regarding angles of circles to find missing measurements. Homework. Cumulative Review 4 due this Friday at the beginning of class. Summary Worksheet.

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Warm UP

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  1. Warm UP • In your own words, define: • 1) intercepted arc • 2) secant • 3) chord

  2. Objective • SWBAT use theorems regarding angles of circles to find missing measurements.

  3. Homework • Cumulative Review 4 due this Friday at the beginning of class

  4. Summary Worksheet • Let’s fill out the summary worksheet… • It is coming your way on the next slide.

  5. Summary Worksheet • 1) Central angle mAVC = mAC • 2) Inscribed angle mAVC = (1/2)mAC • 3) Vertex-on angle (acute) mAVC = (1/2)mAV

  6. Summary Worksheet • 4) Vertex-on angle (obtuse) mAVC = (1/2)mADV • 5) Vertex-in angle mAVC = (1/2)(mAC +mBD) • 6) Vertex-out angle (secant) mAVC = (1/2)(mBD –mAC)

  7. Summary Worksheet • 7) Vertex-out angle (sec/tan) mAVC = (1/2)(mBC –mAC) • 8) Vertex-out angle (tangent) mAVC = (1/2)(mABC – mAC

  8. Application • Use your summary worksheet to get through as much as possible of Practice 12-5 Example Exercises (#1, 3, 5, 7 only)

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