Exploring the Parts of a Circle

Exploring the Parts of a Circle

Learning Objective

At the end of the lesson, you will understand the key parts of a circle and their properties.

What do you already know about the parts of a circle?

Circle Basics

A circle is a set of points equidistant from a center point. The distance from the center to any point on the circle is the radius.

Center and Radius

The center is the midpoint of the circle. The radius extends from the center to any point on the circle.

Diameter

The diameter is twice the radius and passes through the center, connecting two points on the circle.

Circumference

The circumference is the total distance around the circle. It can be calculated using 2π times the radius.

Chord

A chord is a line segment with both endpoints on the circle. The diameter is the longest chord.

Arc

An arc is a portion of the circle's circumference. It is defined by two points on the circle.

Interactive Activity

Use a compass to draw a circle and label its parts. Identify the radius, diameter, and any chords.

Write down 3 things you learned in this lesson.

Write down 2 things you want to know more about.

Ask 1 question about something you haven't quite understood yet.