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Why is a cylinder not a polyhedron?
A polyhedron is a 3 dimensional figure made of polygons. A cylinder is made of two circles and a rectangle around the middle. Since circles are not considered polygons (don't have straight edges), a cylinder cannot be a polyhedron. I just had a discussion about this with my math students today.
What are the flat surfaces on a pyramid cube or rectangle prism called?
flat surfaces on any polyhedron are called faces
Rectangle based pyramid?
It is a 3-dimensional shape - a polyhedron = whose base is a rectangle and which has four triangular faces attached to its sides. These free vertices of these triangles meet at an apex above the base.
What geometric shape is one of the faces of a cereal box?
A cereal box is a six sided rectangular polyhedron called a rectangular cuboid. Each of its faces has the shape of a rectangle.
Is a cuboid a polyhedron?
no a cuboid is not a polyhedron if it was it would have 9 faces
