In a triangle, the larger the side, the larger the angle that is opposite to that side. We can first order the sides from shortest to longest and then convert them into their corresponding angles.
10 < 14 < 16
ST < RS < TR
From there we can then replace the sides with their corresponding angles, the angle labels each are named as the one letter that is not included in the name.
∠R < ∠T < ∠S
Therefore this is the order of interior angles of the triangle from smallest to largest.
