Create an object called shape that has a type property and a getType() method.

Define a Triangle() constructor function whose prototype is shape. Objects created with () should have three own properties—a, b, c representing the sides of a triangle.

Add a new method to the prototype called getPerimeter().

Test your implementation with this code:

	>>> var t = new Triangle(1, 2, 3);
	>>> t.constructor

Triangle(a, b, c)

	>>> shape.isPrototypeOf(t)

true

	>>> t.getPerimeter()

6

	>>> t.getType()

"triangle"

Loop over t showing only own properties and methods (none of the prototype's).

Make this code work:

	>>> [1,2,3,4,5,6,7,8,9].shuffle()

[2, 4, 1, 8, 9, 6, 5, 3, 7]