Two lengths of two sides of a triangle are
5 feet and 12 feet. The angle between
them is an obtuse angle. What can be
said of the length of the third side of
the triangle?
A. It is equal to 13 ft.
B. It is greater than 13 ft.
C. It is less than 13 ft.
D. It is between 5 ft and 12'ft.

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)