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Theorems on Triangles

  • Triangle: A triangle is a three-sided polygon. It is the polygon with the least number of sides.



We denote this triangle as ΔPQR. Here, are the sides of ΔPQR. The points P, Q and R are the vertices of ΔPQR and the angles are ∠RPQ, ∠PQR and ∠QRP.

  • A triangle can be classified on the basis of …

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