User talk:Bobthesmartypants/Sandbox
< User talk:Bobthesmartypants
Revision as of 14:07, 29 September 2013 by Bobthesmartypants (talk | contribs) (→Bobthesmartypants's Sandbox)
Bobthesmartypants's Sandbox
First, continue to hit
at
. Also continue
to hit
at
.
We have that
. Because
, we have
.
Similarly, because
, we have
.
Therefore,
. We also have that
because
is a parallelogram, and
.
Therefore,
. This means that
, so
.
Therefore,
.