November 2009
Beginner
368 pages
8h 55m
English
Content preview from Head First 2D Geometry
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190 Chapter 4
uh oh…
The people behind the drinks stall won’t see the stage…
The engineers have started setting up, and now that the
drink stand is in place, your buddies realize that it blocks
the view for whoever will be standing behind it.
The people in this area
can’t see the stage.
Drinks/merch stall
8m
15m
Stage this end
Great
show!
Hey! I
can’t see!
Hey! I
can’t see!
This
sucks!
If they can’t see the
show they’re gonna
want their money back!
you are here 4 191
triangle properties
Oh, no! We’re gonna
have to give refunds to people
who get stuck in that area.
Or rope it off and sell fewer
tickets....
Tom: Ugh. How many refunds?
Dave: I don’t know…we’d need to work out how many
people are in that area behind the screen.
Ben: Can’t we do something else? People are gonna be
so disappointed!
Chris: And it means less cash as well—which means
we’ll have less to split between us all!
Tom: I guess we could hire a giant screen maybe? But I
bet they are way expenisve.
Dave: But we’ll lose money if we give refunds
anyway—so anything less than that amount is worth it,
yes?
If you had to give refunds to all the people in that area, how much
would it cost you? (1 person per 2 square meters and $10 a ticket.)
Chris
Tom
Ben
Dave
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.