Dissecting a triangular prism into 3 equal-volume pyramids
Use the slider or button to dissect the prism into three pyramids. When the separation is complete, three more buttons and sliders will appear. Use them to compare the volumes of the three pyramids. Although the pyramids are not congruent, upon pair-wise comparison it can be seen that they have the same volume, each 1/3 the volume of the original prism.