The pyramid is divided into two types: the pyramid and the pyramid slope.
This pyramid The pyramid whose base is a polygon equilateral angle. A length equal to the slant height of each line the same length. And the height perpendicular to the base which points away from the vertices of the polygon as the base is the same medicine with all the faces are isosceles triangle. Where's all the spines of unequal height, tilt all the unequal called oblique pyramid.
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