- 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 the measures of its angles and sides.
- Classification of triangles on the basis of the measures of its angles:
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