
To find: The range of measure of the length of third side of the

Answer to Problem 12PPS
No a triangle will not be formed with the given side lengths.
Explanation of Solution
Given information:
The given sides of the triangle are:
4 and 8
Consider the inequality of triangle theorem:
The sum of the lengths of any two sides of a triangle should be greater than the third side.
Consider the third side of the triangle as x .
Check the range of x as greater than the sum of the other two sides.
if 4+8>x 12>x
Consider the second side of the triangle as x .
Check the range of x as greater than the sum of the other two sides.
if 8+x>4 x>−4
Consider the first side of the triangle as x .
Check the range of x as greater than the sum of the other two sides.
if x+4>8 x>4
From the above range of, find the range of x .
4ft<x<12ft
Hence, the range of the third side of the triangle is 4ft<x<12ft .
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