Homework Clinic
Mathematics Clinic => Grade 9 Mathematics => Topic started by: Millan on Jun 18, 2013
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Alike: Different:
They both come to a point # of sides
Have one base
I don;t know what else.
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They both come to a point, but cones have a round base and pyramids have a polygon for a base. As a result, pyramids have three or more lateral sides, depending on how many sides the base has.
They both have a formula for volume: V = (1/3)bh
Volume = (1/3)(base)(height)
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A cone has one flat circular base, one curved side, and an apex. The apex is directly above the centre of the base.
A pyramid has one flat polyhedral base, a number of flat triangular sides, and an apex. The apex is directly above the centre of the base.
As I said, the pyramid has a polyhedron as its base. If this polyhedron was a square (4 sides) then it would be the shape of the tombs along the Nile in Egypt. If it has a triangular base (3 sides), it would be a tetrahedron.
A polyhedron with an infinite number of sides is a circle, so therefore you can say that a cone is a particular type of pyramid.
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cone has round side while pyramid has flat faces
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there volumes are = as it is 1/3rd times base area times height
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Pyramids and cones are both three dimensional shapes (3-D shapes are actually called forms). Yes they both have a base, but do not have the same number of sides or faces. They do both have or come to a point.
They both can be symetrical if you are comparing a cone to a 5 sided pyramid as opposed to a 4 sided pyramid (I'm including the bottom side)