November 2009
Beginner
368 pages
8h 55m
English
Content preview from Head First 2D Geometry
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you are here 4 3
finding missing angles
In the ballistics lab you’ve got to cover
all the angles
As the ballistics investigator, your mission is to work out what happened
to the bullet between when it was fired from the gun and when it stopped
moving, and whether that ties up with what the investigators suspect—
that Benny shot Micky.
Bullets travel in straight lines
The whole basis of your investigation is something that all bullets have in
common: they travel in straight lines.
Angles matter
Angles are formed where straight lines meet. Because bullets move in
straight lines, taking aim really means deciding what the angle is between
you and the target. The angle of the shot determines whether the bullet
hits or misses the target.
The case rests upon you finding the answer to just one question…
✔
✘
✘
Bullets move in straight
lines like this.
Bullets don’t randomly
change direction.
Bullets don’t wiggle
around like this.
Target
A shot at this angle
hits the target.
85º
Target
A shot at this angle
misses the target.
95º
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