Rhombus

Implement the rhombus function to recreate the following graphic.

A rhombus is composed of two isosceles triangles placed one above the other.

The vertical isosceles triangle

Let's start by implementing the isosceles_triangle function, that generates an isosceles triangle rotated vertically (straight). An approach could be to call the triangle function with the same value for the two sides and the given angle between them, and then rotate it accordingly. The following sketches might help you with the reasoning on the rotation angle.

Note that the rotate function requires a negative angle to rotate clock-wise.

• result of triangle(160, 160, 40, black)

  

• with horizontal and vertical axis to help find the angle of rotation

  

• wanted result

  

The rhombus

Now you only have to combine two isosceles triangles one above the other to generate a rhombus. Implement the rhombus function using the pytamaro above and rotate functions, together with the isosceles_triangle function that you just implemented.