Question

Question 1 of 10

A triangle has two sides of lengths 7 and 9. What value could the length of
the third side be? Check all that apply.
A. 5
B. 13
C. 2
D. 22
E. 10
F. 8

Answer 1

A, B, E and F.

Explanation:

A triangles side must be larger than the difference of the other sides, and smaller than the sum of the other sides. So in this case we could create an equation such as, 9-7<x<9+7. From this equation we can conclude that this side can be between 2 and 16. So, A, B, E and F all work.