A hemisphere is one example.
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# Square Pyramid # Rectangular Pyramid # Triangular Pyramid
Cone or a pyramid
a two dimensional figure is flat. it only has length and width. three dimensional figures have length, width and height. A square is a 2 dimensional figure, but a cube is a 3 dimensional figure.
It is a sphere which looks like a globe
A polygon is a 2-dimensional closed figure that has at least three sides. A pentagon is a 2-dimensional closed figure that has five and only five sides, so it is a kind of polygon.