1 / 9

Angles Formed by Secants and Tangents

Angles Formed by Secants and Tangents. Section 9.4 Pg. 588 Mrs. Riggle. Lesson Objectives. Today we will learn how to: Define angles formed by secants and tangents of circles. Use theorems about measures of arcs intercepted by these angles. Classifications of Angles with Circles.

verdad
Download Presentation

Angles Formed by Secants and Tangents

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Angles Formed by Secants and Tangents Section 9.4 Pg. 588 Mrs. Riggle

  2. Lesson Objectives • Today we will learn how to: • Define angles formed by secants and tangents of circles. • Use theorems about measures of arcs intercepted by these angles.

  3. Classifications of Angles with Circles

  4. Case 1: Vertex On Circle • Find each measure: • m<BCD • mABC

  5. Case 2: Vertex Inside Circle • Find the angle measure: • m<SQR

  6. Case 3: Vertex Outside Circle • Find the value of x:

  7. Summary

  8. You try! Remember -Vertex On Circle = ½ measure of the arc. -Vertex Inside Circle = ½ sum of the intercepted arcs. -Vertex Outside Circle = ½ difference of the intercepted arcs.

  9. Independent Work Pgs. 593–594, #11–25, odds. Check your answers in the back of the textbook when you are finished. Work to be Submitted 9.4 EdMastery Assignment Due 4p.m. Friday, April 15, 2011. Assignment Have a nice weekend!

More Related