posted by cole on .
Directions: Determine if the given lengths in each problem can form a triangle.
1. 7in. , 3in. , 10in.
i think you have to use the pythagorian theorem--i think it's false
7 + 3 only reaches the two ends of 10 in a straight line.
the sum of the two sides must be grater than the third side
If your triangle has two acute angles and one obtuse angle, those measurements will work.
The sum of two lengths must be greater than the third.