Question

In RST, RS = 7, RT = 10, and ST = 8. Which angle of RST has the smallest measure?

Answer 1

The larger the opening between two sides, the longer is its opposite side. Assuming ∠R is between RS and RT, its opposite is ST, ∠S is between RS and ST, its opposite is RT, ∠T is between ST and RT, its opposite is RS.

Thus, ∠T is the smallest angles because it has a corresponding smallest side.