Untitled Lesson

Geometry

7.1 Circles and Circumference

Problem of The Day #16.1

Draw a circle. +5pts on Assignment

Today’s Objective

We will solve for the circumference and lengths
of arcs of a given circle.

I will: obtain the measurement of the circumference
and arc lengths of a circle.

Last 2 ½ Weeks of School

Word of the Day

Writing Notes

7.1 Circles and Arcs

Which of the following shapes is not

considered to be a circle?

What is a circle?

A circle is the set of all points in a plane that are
equidistant from a given point called the center of the
circle.

Segments Found in a Circle

The radius is a segment whose endpoints are the
center and any point on the circle.
A chord is a segment whose endpoints are both on
the circle.
The diameter is a chord that contains the center of
the circle.

Finding the circumference of a circle.

Example 1.A

The circumference is the distance around the circle.

Find the circumference for the circle shown below

𝟏 𝒊𝒏𝒄𝒉

Finding the circumference of a circle.

Example 1.B

Find the circumference for the circle shown below

Circumference

Independent

Find the circumference of the circle.

Part of a circle?

Example 2.A

Arc Length

Example 2.A The Arc Length is a part of the circumference.

Arc Length

Example 2.B

Arc Length

Independent

Today’s Assignment (12 Problems)

Exit Ticket (Participation Grade)

COMPLETE GOOGLE FORM

A part of the

circumference of a circle

is called an…?