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One of them is a tetrahedron i think? i dunno? wot else is there?
(don't get confused)
the 5 regular:
tetrahedron (triangular pyramid) face:4 edge:6 verticies:4 dual: tetrahedron
cube (triangular deltohedron) face:6 edge:12 verticies:8 dual: octohedron
octohedron (square dipyramid) face:8 edge:12 verticies:6 dual: cube
dodecahedron (I think:half truncated pentagonal deltohedron) face:12 edge:30 verticies:20 dual: icosahedron
icosahedron (penagonal gyrolongated dipyramid) face:20 edge:30 verticies:12 dual: dodecahedron
there is an unlimited number, but these are the regular ones, wich means all faces, edges, and verticies are the same.
(circles, cones, and spheres are not polyhedrons because they'r not flat)
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Why aren't cylinders cones and spheres polyhedrons geometry?
polyhedrons need flat face and edges, corners which cylinder cones don't have.
What geometric shape are dice?
Polyhedrons.
What are polhedrons?
Polyhedrons are shapes with many faces
Some polyhedrons are neither prisms nor pyramids?
true
Cones and polyhedrons both have only one base?
false
How many names of polyhedrons help you know the number of their faces?
6
All polyhedrons are prisms or pyramids.?
No. Polyhedrons are any shape with multiple sides. A triangle and a prism are just two different kinds of polyhedrons.
Are polyhedrons symmetrical?
not all, but some
Do polyhedrons have right angles?
not all
What are all the four sided polyhedrons?
tetrahedrons
What has bases and sides that are polygons?
All polyhedrons.
Are prisims polyhedrons or not polyhedrons?
A prism is a polyhedron.
Is it true that all polyhedrons are cubes?
No. Not even all hexahedrons are cubes.
What are all the shapes that are not polygons?
They are 3 dimensional objects such a s polyhedrons.
What three dimensional figure only contain a polygon?
...All polyhedrons
Are all solids polyhedrons?
No, those bounded by only plane faces are but others are not.
Why do you need polyhedrons?
To study solid objects whose faces are all polygons.
