THEOREM.--_Any two sides of a triangle are together greater than the
third side_.
Let ABC be a triangle.
[Illustration]
CONSTRUCTION.--You know the eleventh hole? Well, let B be the tee,
and let C be the green, and let BC be my drive. Yes, _mine_. Is it
dead? Yes.
Now let BA be _your_ drive. I'm afraid you've pulled it a bit and gone
into the road by the farm.
You can't get on to the green by the direct route AC because you're
under the wall. You'll have to play further up the road till you get
opposite that gap at D. It's a pity, because you'll have to play about
the same distance, only in the wrong direction.
Take your niblick, then, and play your second, making AD equal to AC.
Now join CD.