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Head First 2D Geometry
book

Head First 2D Geometry

by Stray (Lindsey Fallow), Dawn Griffiths
November 2009
Beginner content levelBeginner
368 pages
8h 55m
English
O'Reilly Media, Inc.
Content preview from Head First 2D Geometry
you are here 4 53
similarity and congruence
The designer noted all of the details
The designer wrote a bunch of notes around his drawing. He
seems to have filled out all the line lengths, but only included
a few of the angles?!?
Mountain
tip triangle
is the same
shape
triangle as
the whole
mountain
The two mountain triangles
are the same shape, but
rescaled/flipped
120
56
6060
37.5
30
40
48
40
6
60
41º 53º
This corner also
90
Hand draw the
sun and rays
It certainly looks like there are a lot of angles missing.
Has the designer left you any hints about what the angles
he hasn’t written might be?
Uh oh! Your first day on the job and you’ve
got a busted design! I can’t believe the
designer stuck it in the book unfinished like
that. I’d get your customer to choose another
one....
some
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Publisher Resources

ISBN: 9780596808365Errata Page