E-learning app: Finding the right type of a quadrilateral.

Learn to determine a quadrilateral!
A four sided geometrical, 2-dimensional object is presented.
Is it a square, a rectangle or just an trapezoid?
7 types are possible – which comes closest to the presented quadrilateral?
Square
Rectangle
Trapezoid
Kite
Rhombus
Parallelogram
Irregular quadrilateral

The correct answer is the type which is the most specific one. That is the one which has the strongest restrictions and still complies with the presented quadrilateral.

What means „restriction“? Example: The square has the strongest restrictions of all these types as all sides have to be equal and all inner angles are 90°.

Curriculum at school: Grades 3,4,5