Head First 2D Geometry > Circles: Going Round and Round - Pg. 205: Safari Books Online

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Head First 2D Geometry

Head First 2D Geometry

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Table of Contents

Advance Praise for Head First 2D Geometry

Praise for other Head First books

How to Use this Book: Intro

Ch. 1. Finding Missing Angles: Reading Between the Lines

Ch. 2. Similarity and Congruence: Shrink to Fit

Ch. 3. The Pythagorean Theorem: All the Right Angles

Ch. 4. Triangle Properties: Between a Rock Show and a Triangular Place

Ch. 5. Circles: Going Round and Round

It's not just pizza—it's war!

How does MegaSlice's deal measure up?

The diameter of a circle is twice its radius

How do slices compare to whole pizzas?

Sectors of a circle have angles totaling 360°

MegaSlice's $10 deal is a con!

Pepperoni crust pizza—but at what price?

The pepperoni perimeter is 3 (and a bit) times diameter

Mario wants to put your pepperoni crust pricing formula to the test

The customers are always fussy

An arc is a section of the circumference

Mario's business is booming!

But MegaSlice is at it again...

We need to find the area of the two pizza deals

Each sector (slice) is a triangle (kind of)

Area of a circle = πr2

Mario's pizza is here to stay

Your Geometry Toolbox

Ch. 6. Quadrilaterals: It's Hip to be Square

Ch. 7. Regular Polygons: It's All Shaping Up

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5 circles Going round and round And if I push you real hard, this time you'll go over the top and travel the whole circumference. Now, hold tight!