November 2009
Beginner
368 pages
8h 55m
English
Content preview from Head First 2D Geometry
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you are here 4 311
regular polygons
BAND called RE: hot tub.
NO SQUARES or TRIANGLES
Too boring....
Rock stars—high maintenance?
Uh oh. The band is getting demanding. They’ve seen the All Star
Hot Tubs brochure lying around and think there’s a couple of
designs that look pretty uncool.
Which hot tub do you want to order?
Our complete summer range...
All St r Hot Tubs
Tri-cuzi Chill-out-corner Hex-it-up 7th Heaven Relaxiv8 9 sides Magic Circle
Tubs can be any size, all depths 0.5m
At least you don’t have
to pick out all the red
M&Ms from their snack
bar…
312 Chapter 7
exercise solution
The HEX-IT-UP tub with six sides.
Which hot tub do you want to order?
Q:
A circle is just a polygon with
infinite sides? Have you gone a bit
philosophical or what?
A: Some math geeks get a bit upset
about this definition of a circle, but if you
could draw enough sides then you’d be
approaching a circle. The whole point of
infinity is that you never get there, but you
get close enough for this to be the basis of
computer graphics.
Q:
Computer graphics? Polygons?
How does that work?
A:
To show 3D curvy worlds, all video
games rely on triangles, which build into
polygons, which fool our eyes into believing
we’re seeing circles and curves.
Q: Ah! Yeah, when I’ve zoomed
in real close to something in a game
sometim ...
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