Class ix cbse mathematics Triangles ix.pptx

Triangle

1. We know that a closed figure formed by three Line segments is called a triangle(‘Tri’ means ‘three’). A triangle has three sides, three angles and three vertices. For e.g.-in Triangle ABC, denoted as ΔABC AB,BC,CA are the three sides, ∠ A, ∠ B, ∠ C are three angles and A,B,C are three vertices.

2. Axiom 7.1 Theorem 7.1

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4. THANK YOU