Triangle 1st side 12cm and 2nd side 15 what is 3rd side

Answer 1

To find the third side of the triangle, we can use the triangle inequality theorem which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

In this case, the first side is 12cm and the second side is 15cm. Therefore, the sum of these two sides must be greater than the length of the third side.

12 + 15 = 27

So, the third side of the triangle must be less than 27cm.