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Problem Description: Design a class named Triangle that extends GeometricObject. The class contains: • Three double data fields named side1, side2, and side3 with default values 1.0 to denote three ...
My solutions to the Introduction to Java Programming 10th edition by Y. Daniel Liang ... (Geometry: area of a triangle) Write a program that prompts the user to enter * three points (x1, y1), (x2, y2) ...