In given figure equilateral triangles are drawn on the sides of a right triangle. Show that the area of the triangle on the hypotenuse is equal to the sum of the areas of triangles on the other two sides.
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Solution
Given A right angled triangle ABC with right angle at B. Equilateral triangles PAB, QBC and RAC are described on sides AB, BC and Ca respectively.
To prove Area(△PAB)+Area(△QBC)=Area(△RAC).
Proof Since triangles PAB, QBC and RAC are equilateral. Therefore, they are equiangular and hence similar.