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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
24 Chapter 1
it’s not really a straight line
If it doesn’t all add up, then
something isn’t as it seems
The mystery angle is 18º and the mystery angle is 13º…well,
that clearly doesn’t add up. If the mystery angle is 13º, then
it can’t be vertically opposite our 18º bullet path angle as well.
This means that the line on the sketch from Benny to Micky
doesn’t join up perfectly with the bullet path.
BULLET
PATH
MICKY
BENNY
FOOTPRINTS
18º
CRIME SCENE SKETCH
CASE GEO180
(ANGLES AS MEASURED
BUT DRAWING NOT TO
SCALE)
81º
86º
72º
81º 99º
We thought that this would be a
straight line from Benny through
to the bullet path, but our
calculations show that it can’t be.
18º
13º
18º
13º
This is simply impossible.
These angles could only
work if the bullet path
actually bent right here.
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Publisher Resources

ISBN: 9780596808365Errata Page