Is a triangle a right triangle if the lengths of its sides are

a) 11 cm, 20 cm and 9 cm?



Answer: The triangle is is not a right triangle.

b) 8 cm, 6 cm and 10 cm?



Answer: The triangle is is not a right triangle.

c) 7 cm, 24 cm and 25 cm?



Answer: The triangle is is not a right triangle.