November 2009
Beginner
368 pages
8h 55m
English
Content preview from Head First 2D Geometry
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66 Chapter 2
work smarter
Employee of the month already?
Similarity helps you work smarter, not harder, to find missing angles
That was incredible. There
were so many gaps on that
diagram—I never thought we could
use those old designs. That must
have been a ton of work!
41º 53º
86º
86º
41º
139º
127º
139º
41º
86º
94º
139º
127º
41º
53º
53º
While it’s great to be able to use your Geometry Toolbox for
finding missing angles, when you spot similarity, you can zip
straight through to filling them in without even breaking out
your calculation skills.
How can you tell if two squares or two circles are
similar?
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