10.6 Circles

Download 10.6 Circles

Post on 07-Jan-2016

21 views

Category:

Documents

3 download

Embed Size (px)

DESCRIPTION

10.6 Circles. and. Arcs. Objective : Find the measures of central angles and arcs. A CIRCLE is the set of all points equidistant from a given point called the center. This is circle P for Pacman. Circle P. P. Central angle. - PowerPoint PPT Presentation

TRANSCRIPT

  • andObjective: Find the measures of central angles and arcs.

  • A CIRCLE is the set of all points equidistant from a given point called the center.This is circle P for Pacman.Circle PP

  • A CENTRAL ANGLE of a circle is an angle with its vertex at the center of the circle.

  • An arc is a part of a circle. In this case it is the part Pacman would eat.

  • One type of arc, a semicircle, is half of a circle. PACB

  • A minor arc is smaller than a semicircle. A major arc is greater than a semicircle.

  • RLNMO

  • ACDIdentify the following in circle O: 1) the minor arcsEO

  • ACDIdentify the following in circle O: 2) the semicirclesEO

  • ACDIdentify the following in circle O: 3) the major arcs containing point AEO

  • The measure of a central angle is equal to its intercepted arc.

  • Find the measure of each arc. BC = 32 BD = 90 ABC = 180 AB = 148

  • Here is a circle graph that shows how people really spend their time. Find the measure of each central angle in degrees. Sleep Food Work Must Do Entertainment Other

  • Homework: page 569 (1 26)