You are given the Shape class to be used as a base for other shapes.

Create a Triangle class based on the UML diagrams below.

Note that the triangle is equilateral, all three sides are the same length.

The formula for the area of an equilateral triangle is as follows:

area $=($ sqrt$(3)/4)$ side$^2$

The default side length of a newly constructed triangle should be $1\mathrm{.}0.$

The name of a newly constructed triangle should be "triangle".