We cut a corner of a cube as shown in the figure. The cut out piece is _________.

triangular pyramid

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square pyramid

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trapezium prism

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triangle

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Solution

The correct option is A
triangular pyramid

Pyramid is the 3D figure which has a polygonal base and triangular faces such that all the vertices of the polygonal base are joined to one vertex at the top.

The pyramid is named based according to the base polygon.

Here, since the cut out surface is triangular, the cut out piece is triangular pyramid.

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