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math help please

a plane intersects a square pyramid perpendicular to its base but not through a vertex.The plane forms a cross section what is the shape of the cross section
a)trapezoid
b)triangle
c)square
d)rectangle

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betty

  1. planes that intersect only one of the edges are triangular.

    Planes that contain two of the edges have quadrilateral cross-sections. If the plane is parallel to one of the base edges, the section is a trapezoid. Otherwise, it is just a general quadrilateral.

    Try drawing some cases.

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    Steve

  2. triangle

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    srijoy paul

  4. its a trapezoid.

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    harley

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