Prism
Drag the vertices in the base to change the shape of the base.
Drag point G over point H to change the base to a quadrilateral.
Drag point F over G and H to create a triangular base.
Keep points I, J and M on the grid to see a right prism.
Move point M away from the grid lines to change the angle between the base and the sides.
Move the vertices of the base and point B to create a right rectangular prism and a cube.