Head First 2D Geometry

Fi

that’s a lot of speakers

You’ve got $11,250 to spend

After working out the capacity (number of people

you can sell tickets to) and the fencing costs for each

potential venue, it turns out that Field B is the best—it

gives you $11,250 to spend on the festival.

Chapter 4

Man! Over 11,000 bucks!

We are gonna have the

most AMAZING sound

system!

Ticket money = 1350 x 10 = $13500

Cos

t of fencing = $3885

R

emaining money = 13500 - 3885 = $9615

F

i

eld A

Ticket money = 1500 x 10 = $15000

Cost of fencing = $3750

Remaining money = 15000 - 3750 = $11250

Fi

eld B

Ticket money = 1283 x 10 = $12830

Cos

t of fencing = $3420

R

emaining money = 12830 - 3420 = $9410

eld C

T

his fi

eld giv

es y

ou

the mos

t buck

s.

168

triangle properties

TriangleGrid

Stop the press! Your buddies have secretly lined up

a headline act for the festival. Solve the grid puzzle

to be the rst to know who the mystery band is.

Mys

tery band

1

2

3

4

5

6

7

8

9

10

11

Clues

1. You use this theorem to find missing sides of right triangles.

2. Two angles adding up to 90º are known as this.

3. The month before August.

4. When lines cross, they create equal and opposite pairs of these.

5. If shapes have equal angles but are different sizes they are this.

6. To find common factors you can use one of these.

7. The height of a triangle is the length of this.

8. If triangles are similar and the same size then they are this.

9. Two angles adding up to 180º are know as this.

10. 3-4-5 and 5-12-13 are examples of Pythagorean .........

Nex

t up—picking the

p

er

fec

t speaker

s!

ROCK FESTIVAL

TO-DO LIST

1) Fi

nd a venue

2) Sor

t out secur

i

ty fenci

ng

3) Sound system!!

4) Dr

inks s

t

and?

11. The longest side of a right triangle is called this.

you are here 4 169