Pythagoras theorem applies to which type of triangle?

Question

Accepted Answer

A. A right-angled triangle

1. The theorem relates the squares of the sides of a triangle.
2. It is valid only if one angle is 90 degrees.
3. Such a triangle is right-angled.
4. So option A is correct.
_Source: Selina Concise Mathematics Class 9, Ch on Pythagoras Theorem (Mistral OCR'd PDF), section on Pythagoras theorem_

Answer

An equilateral triangle only

Answer

An isosceles triangle only

Answer

A scalene triangle only

Pythagoras theorem applies to which type of triangle?

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