Chapter 4, Problem 12E

Explanation of Solution

Program:

//define the static function

public static void printTriangleType(int s1, int s2, int s3) {

    //condition initialized to check whether the value of s1 is equal to s2

    if (s1 == s2) {

        //condition initialized to check whether the value of s2 is equal to s3

        if (s2 == s3) {

            //print statement

            System.out.println("equilateral");

        }

        //condition initialized to check whether the value of s1 is equal to s2 or s1 is equal to s3 or s2 is equal to s3 

    } else if (s1 == s2 || s1 == s3 || s2 == s3) {

        //print statement

        System...