Regular Polyhedra - Two Projections
* The octahedron is the dual polyhedron to the cube. * The octahedron represents the central intersection of two tetrahedra.
Move "Orbit" point for rotating model.
how a parallelepiped decomposes into six tetrahedra
The carousel of tetrahedra
A decomposition lemma for tetrahedra.
Exploring Reflections 2
תנועה 265 משימה 1 שוש
Arc Problem (b)
Surface Area of a Sphere
Concentric spheres cut by a plane
Probabaility to make a triangle with 3 broken spaghetti. 2D