10 6 CIRCLES AND ARCS By Brit Caswell

10. 6 CIRCLES AND ARCS By Brit Caswell

Some Vocabulary… A circle is the set of all points equidistant from a single point. Circles with the same center are called

An arc is a part of a circle. When naming arcs, if two letters are used, assume the minor arc is being referred to. If three letters are used, follow the path of the points.

Arc Measure, pg 650

This postulate just says that you can add arc lengths, just like you do line segments or angle

Pg 651, #2 What is the measure of each arc length?

Remember your circumference equation?

Pg 652, #3 Think, Pair, Share

Arc Length Remember, the measure of an arc is in degrees and the length of an arc is measured linearly, in inches, feet, etc. !

Pg 653, #4 We do, You do! Find the red arc length

Pg 656, #47 Find the value for c.

Let’s Practice! Pg 655, #29 The wheel of a compact car has a 25 -in. diameter. The wheel of a pickup truck has a 31 -in diameter. To the nearest inch, how much farther does the pickup truck wheel travel in one revolution than the compact car wheel?

Pg 655, #35 Find the arc length of the red arc.

Pg 655, #36 Pair up and discuss the problem. One person determine all of the given information. One person determine what the plan of action is.

Work together for a solution!

Pg 655, #44