NJ Mam

Neharika Jayani

Stewart’s Theorem

Stewart’s theorem  with its proof by cosine law and trick to memorize it




​Motor bike tube or swimming tube is also a 3D solid figure called as TORUS. It is not in the CBSE syllabus of Surface areas and Volumes but its a beautiful figure worth knowing.


​A cone is any three-dimensional shape that tapers from a flat base to a single vertex. A pyramid is a specialized type of cone. Pyramids are cones with polygonal bases.

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NJ Mam

Neharika Jayani


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