UPSC NDA Math Model Paper 10

ABC is a triangle in which BC = 10 cm, CA = 6 cm and AB = 8 cm
(BC)2=(10)2=100
(CA)2=(6)2=36
(AB)2=(8)2=64
Consider, (CA)2+(AB)2
⇒36+64
⇒100
⇒(BC)2
Here, the square of the hypotenuse side is equal to the sum of squares of the other two sides“
Pythagorean theorem is true.
⇒ ABC is a right-angled triangle.