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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Let us consider ABC as a right angled triangle with AB as hypotenuse,AC as height and BC as base. It is given in the question that AC=BC and AB^2=2AC^2 Now ,in a right angled triangle , hypotenuse^2=base^2 +altitude^2 So according to the theorem in this case, AB^2=AC^2+BC^2 In the question it is clearly mentioned that AC=BC ie;AB^2=AC^2+AC^2 ie;AB^2=2AC^2 Hence proved