What Do You Call A Four Sided Polygon With No Sides Parallel?

Trapezium

Irregular

It is called a scalene triangle

The correct answer is a 'kite' or 'deltoid', which is a quadrilateral polygon with no parallel sides. The most common forms of this shape strongly resemble the old style of kite flown with a knotted tail attached to it, thus the name.

Hope that helped, and you have a great day!
Asuka Jr.