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Question

# Pythagoras theorem is only applicable to ___ .

A
right-angled triangle
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B
isosceles triangle
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C
equilateral triangle
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D
scalene triangle
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Solution

## The correct option is A right-angled triangle A right-angled triangle is a triangle in which one angle will be 90 and one side will be the hypotenuse. Hypotenuse will be the square root of the sum of the squares of other two sides. Hence only in the right-angled triangle, the hypotenuse is present, therefore Pythagoras theorem is only applicable to the right-angled triangle.

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