Lesson: Identifying and Using Parts of a Circle

In this lesson, we will learn how to identify and use parts of a circle, such as the radius, chord, and diameter, to solve problems.

Question Video: Finding the Sum of the Radii of Two Externally Touching Circles

01:59

Q1:

What is the name of the following shape?

Q2:

Are all the radii of a circle equal in length?

Q3:

Is the diameter the longest chord in a circle?

Preview