1 / 6

9.4 ~ Angles formed by Secants & Tangents

9.4 ~ Angles formed by Secants & Tangents. Three cases to consider. How many different ways can you think of involving the intersection of two lines and a circle? The lines can be secants or tangents or one of each. (CASE 1). Vertex is ON the circle. 2 Secants. Secant & Tangent.

truda
Download Presentation

9.4 ~ Angles formed by Secants & 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. 9.4 ~ Angles formed by Secants & Tangents

  2. Three cases to consider • How many different ways can you think of involving the intersection of two lines and a circle? • The lines can be secants or tangents or one of each.

  3. (CASE 1) • Vertex is ON the circle 2 Secants Secant & Tangent

  4. (CASE 2) • Vertex is IN the circle 2 Secants

  5. (CASE 3) • Vertex is OUT of the circle 2 Secants Secant & Tangent 2 Tangents

  6. Formulas • ON – Vertex is ON the circle • Angle = ½ Arc • IN – Vertex is IN the circle (not center) • Angle = ½ (Arc + Arc) • OUT – Vertex is OUT of the circle • Angle = ½ (Arc – Arc)

More Related