$($The Triangle class$)$

Design a class named Triangle that extends the GeometricObject class. The Triangle class contains:

Three float data fields named side$1,$ side$2,$ and side$3$ to denote the three sides of the triangle.

A constructor that creates a triangle with the specified side$1,$ side$2,$ and side$3$ with default values of $1\mathrm{.}0.$

The accessor methods for all three data fields.

A method named getArea$()$ that returns the area of this triangle.

A method named getPerimeter$()$ that returns the perimeter of this triangle.

A method named $\_\_$str$\_\_()$ that returns a string description for the triangle.

For the formula to compute the area of a triangle, see Exercise $2\mathrm{.}14.$ The $\_\_$str$\_\_()$ method is implemented as follows:

return "Triangle: side$1="+$ str$($side$1)+"$ side$2="+$ str$($side$2)+"$ side$3="+$ str$($side$3)$

Implement the Triangle class. Write a test program that prompts the user to enter the three sides of the triangle, a color, and $1$ or $0$ to indicate whether the triangle is filled. The program should create a Triangle object with these sides and set the color and filled properties using the input. The program should display the triangle$$s area, perimeter, color, and True or False to indicate whether the triangle is filled or not.