Question

Each group from the alternatives represents lengths of sides of a triangle.
State which group does not represent a right angled triangle.
(1) (9. 40. 41)
(21 (20, 25, 30)
(4) (6, 8, 10)
(3) (8, 15, 17)
Explain it !!!!!!!!!​

Answer 1

Answer:

(1) (9.40.42)

it does not follow pythagoras theorem