समद्विबाहु TriBhuj in english समद्विबाहु त्रिभुज in english

Isosceles Triangle : An isosceles triangle is a triangle with 2 sides of equal length and 2 equal internal angles adjacent to each equal sides.





Unlike an equilateral triangle wherein we can use any vertex to find out the altitude, in an isosceles triangle we are suggested to draw a perpendicular from the vertex which is common to the equal sides.


Let us see how to calculate the area, altitude, and perimeter of an isosceles triangle.


From figure, let :


a be the measure of the equal sides of an isosceles triangle.


b be the base of the isosceles triangle.


h be the altitude of the isosceles triangle. The Isosceles Triangle Formulas are :





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