




 Compare 2 triangular pyramids with same base and height






 Dissect a triangular prism into 3 pyramids of equal volume






 Folding up 6 pyramids to make a cube






 This model shows 3 congruent pyramids that can be put together to make a cube.






 Compare volume of a hemisphere with those of a cone and cylinder of same base and height. (Javasketchpad)






 user defines the curve, use the mouse to drag the 3D solid






