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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
116 Chapter 3
different geometry approaches
You can explore a geometry problem
in different ways
There’s more than one way to investigate a geometry problem,
and the choice of which one to go for is often about how your
own brain works rather than one being “better.”
Think about the
RULES in your
GEOMETRY
TOOLBOX.
IMAGINE what
would happen if.…
Use LOGIC to PROVE
something works or
doesn’t work.
2
Use a PENCIL and PAPER
Sketches can help you think, but an
accurate drawing can also show you
whether something is possible or impossible.
Add a ruler for
more accurate
drawings.
Grid paper gives you
a head start.
Your brain is amazing. Even
before you started to learn about
geometry, your brain could
already recognize symmetry
and special angles. But don’t
just think, use your imagination,
too. What if this shape was really
BIG? What if you turned it
upside down?
1
Use your BRAIN
you are here 4 117
the pythagorean theorem
3
4
Use the REAL WORLD
Use a COMPUTER MODEL
Geometry isn’t just important for your grades,
it’s what engineers and scientists rely on to make
buildings stand up and cars go around corners.
Use kids’ toys, a scrap piece of wood, or make
models out of cardboard to put your theories to
the test.
Geometry isn’t just an
idea—you can TOUCH
it, too!
If you’ve ever played a video or computer ...
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Publisher Resources

ISBN: 9780596808365Errata Page