Chapter 3.7, Problem 7PSA

To determine

We need to list three angles in order of size, from largest to smallest.

Explanation of Solution

Given information: $AC>BC>AB$ is provided in the question which will help to find the solution.

Proof: In $\Delta ABC$

It is given that AC is the largest side.

We know that, the angle opposite to the largest side is the greatest angle.

So that, $\angle B$ is the greatest angle.

And, AB is the smallest side, so $\angle C$ is the smallest angle.

Hence, $\angle B>\angle A>\angle C$