Concept explainers
(Geomentry: point position)
/** Return true if point (x2, y2) is on the left side of the * directed line from (x0, y0) to (x1, y1) */
public static boolean leftOfTheline (double x0, double y0 , double x1 , double y1 , double x2 , double y2)
/** Return true if point (x2, y2) is on the same * line from (x0, y0) to (x1, y1) */
public static boolean onTheSameline{double x0 , double y0, double x1 , double y1 , double x2, double y2)
/** Return true if poi nt (x2, y2) is on the • line segment from (x0, y0) to (x1, y1) */
public static boolean onThelineSegment(double x0, double y0, double x1, double y1, double x2 , double y2)
Write a program that prompts the user to enter the three points for p0, p1, and p2 and displays whether p2 is on the left side of the line from p0 to p1, right side, the same Line, or on the Line segment. Here are some sample runs:
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Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
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- Implement the following two functions: // Returns true if all the sides of the triangle // are same. bool isValid(double side1, double side2, double side3) // Returns the perimeter of an equilateral triangle.double perimeter(double side1) The formula for computing the perimeter is perimeter = 3 * side. Write a test program that reads three sides for a triangle and computes the perimeter if the input is valid. Otherwise, display that the input is invalid.arrow_forward(Java in Eclipse) Write code that finds the sum of two matrices. Use the following method header public static int[][] addMatrix(int[][] a, int[][] b) The rules for adding two matrices are:1. both matrices should have the exact same dimensions (i.e. height and width) – you need to check for this rule in your program.2. both matrices should have elements that have compatible types – you don’t have to add extra code to check this rule in your method as it will only accept int arrays included is a test class and a sample runarrow_forward(Computer-Assisted Instruction) The use of computers in education is referred to as computer-assisted instruction (CAI). Write a program that will help an elementary school student learn multiplication. Use a Random object to produce two positive one-digit integers. The program should then prompt the user with a question, such as How much is 6 times 7? The student then inputs the answer. Next, the program checks the student’s answer. If it’s correct, display the message "Very good!" and ask another multiplication question. If the answer is wrong, display the message "No. Please try again." and let the student try the same question repeatedly until the student finally gets it right. A separate method should be used to generate each new question. This method should be called once when the application begins execution and each time the user answers the question correctly.arrow_forward
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