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SAI International School
                                                       CLASS - IX


               Mathematics
               Chapter7: Triangles
               LESSON NOTES -2


               Sub Topic: Some properties of atriangle.


                    In a triangle if two sides are equal then their opposite angles are equal.
                    In a triangle if two angles are equal then their opposite sides are equal.
                    In an isosceles triangle, the perpendicular drawn to the base bisects it.
                    In an equilateral triangle, the perpendicular drawn to a side bisects it
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