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Solid geometry.

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Q: What is 3d geometry?
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What is the hardest 3D shape?

The question is not clear. Hardest, as in the most rigid, is a triangular prism (or tetrahedron). Hardest, to work the geometry of, is probably an irregular blob.


What are the four aspects of geometry?

* geometry in nature * for practcal use of geometry * geometry as a theory * historic practical use of geometry


How many vertices are in a 3-D square?

A vertex is defined in Geometry and the point at which two lines or segments connect. If we think of a 2D square first we can count that it in fact has 4 vertices. One at the top left, one at the top right, one at the bottom left, and one at the bottom right. We understand in Geometry that a 3D object is a 2D object with an additional plane of space. So knowing this we can assume that there would have to be an additional 4 vertices to formulate a 3 Dimensional square - which is now a cube. So in conclusion If a 2D object has 4 vertices, then a 3D object since it has an additional plane of space would need an additional 4 vertices to make a square on the second plane of space. So we need a total of 8 vertices to make a 3D cube (3D square - though in technicality a square is 2D, a cube is 3D)


What is the mathematics used in platonic solids?

3 dimensional geometry.3 dimensional geometry.3 dimensional geometry.3 dimensional geometry.


If a 3D box looks like a rectangle from the side view and looks like a circle from the top view then the gift box is most likely shaped like a what?

It's a cylinder. Look at http://en.wikipedia.org/wiki/Cylinder_(geometry)