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Which theorem gives the third side of a right triangle?
AThales one
BPtolemy's
CEuclid's
DPythagoras
Answer & Solution
Correct answer: D. Pythagoras
1. Two sides of a right triangle fix the third.
2. The relation squares each side.
3. That is the Pythagoras Theorem.
4. So the answer is Pythagoras.
_Source: NCERT Class 10 Mathematics, Ch 8 'Introduction to Trigonometry'_
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