I'm in high level math, but this little easy problem I came across I can't get!(adsbygoogle = window.adsbygoogle || []).push({});

Here it is (don't laugh):

The below shows the route of Diane's trip from her house to her job. Diane travels 16 miles from A to B, 15 miles from B to C, and 4 miles from C to D. If she were able to travel from A to D directly, how much shorter, in miles, would the trip be?

The figure is something like this (Ignore the dots I couldn't get it to work outherwise):

...........................................4

.....................................C-------D

.....................................|

.....................................|

.....................................|15

.....................................|

.....................................|

.............A----------------B

........................16

A quick explanation should do. I'm just having a mental block and its frusterating. The answer is 10 by the way.

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# Simple Trig Problem

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