Answer:
9 inches
Step-by-step explanation:
Here, we want to know the greatest length of the third side
We apply the triangle inequality theorem here
To get the third side, then the sum of the lengths of the two must be greater than the measure of the third side
let us call the third side x
Then;
5 + 5 > x
10 > x
The highest whole number before 10 is 9: so it is the greatest possible whole number the base of the isosceles triangle can have
