Question

If two sides of a triangle are 7 and 12, what are the possible values for the third side?

Answer 1

7 or 12

Explanation:

Since we're dealing with a triangle, there are two pairs of sides that are going to be equal to each other.

The left and right would be 7 by 7, and the top and bottom would be 12 by 12.

Answer 2

A triangle ABC has 3 sides and they have to satisfy the following.

| a - b | < c < (a+b)

length of a side must be less the sum of the other two and more than the difference between the other two.

Hence, the third side, has to be more than (15-12) = 3 cm. Also it has to be less than (15+12) = 27 cm. It is in between 3 cm and 27 cm