List the sides of each triangle from shortest to greatest

In every triangle, the largest side, is opposite the largest angle.

Also, the smallest side, is opposite the smallest angle.

a. so , 

because RQ is opposite angle P, the largest,
PR is opposite angle Q , the middle
and PQ is opposite angle R, the smallest.

Greatest side: RQ

b. The sum of the measures of the interior angles of any triangle is 180°, 

so 



thus, m(C) is the largest angle. This means the largest side is the side AB.

Answers:

a) RQ
b)AB