Answer:
No triangle is formed
Step-by-step explanation;
A triangle cannot be formed by these lengths.
This is because when forming a triangle, there is an important rule to be considered which does not work with these lengths.
The law is that when forming a triangle, the length of the third side should be less than the sum of the other two sides or greater than the difference between the two other sides.
Considering the sides 40 and 60 as the other two sides, the third length should be a value between 60-40 and 60+40 which equals 20 and 100
The value we get however must not be exactly either 20 or 100 which is not so in this case as the other 3rd case is 100
