Posted by **Anna-Marie** on Monday, March 3, 2008 at 10:08pm.

USE THE INFORMATION TO DECIDE IF TRIANGLE ABC IS ACUTE, RIGHT, OR OBTUSE

AC = 13

BC = sq rt. 34

CD = 3

I know the answer is obtuse but I don't know how to get there. The sq rts threw me off

- Math -
**drwls**, Tuesday, March 4, 2008 at 12:57am
Your example cannot make a triangle because the longest side (13) is longer than the sum of the other two sides (5.83 + 3 = 8.31).

There is a rule that says that if you are given any two sides of a triangle, A and b, the third side must be less than A + B and greater than |A - B|

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