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Head First 2D Geometry by Dawn Griffiths, Stray

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triangle properties
So what are you looking for in your speakers?
The audio store offers six different models of speakers,
categorized by angle and range—how widely and how far
the music will travel.
Spread Angle 60m 100m 200m
60º $1500
$2500 $3000 $4000
$2000 $3000
90º
P
ower / ranges
Think about the impact that your choice of speaker has on the
festival. Fill in the table to work out what you need from your
speakers. (You might not fill in every box.)
If the speakers are… Pros (good things) Cons (bad things)
Wider than the venue
Narrower than the venue
Range shorter than venue
Range longer than venue
you are here 4 171
Don’t w
orry if y
our answ
ers ar
e
w
orded dif
f
er
entl
y, as long as you
got the genera
l ideas down.
sharpen solution
Think about the impact that your choice of speaker has on the
festival. Fill in the table to work out what you need from your
speakers. (You might not fill in every box.)
If the speakers are… Pros (good things) Cons (bad things)
Wider than the venue
People at sides can hear
Wasted money, more expense,
noise pollution
T
he music w
ould trav
el out
the f
es
tiv
a
l as w
ell as inside.
side of
Narrower than the venue
People at edges can’t hear
Range shorter than venue
People at back can’t hear
Range longer than venue
People at back can hear
Wasted money, more expense,
noise pollution
172 Chapter 4

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