Question

The lengths of the sides of aime triangles are given below . Which of the them are right angled. 1. A= 15 cm , b= 20 cm , c= 25 cm
2. A= 9cm , b= 12 cm , c= 16 cm 3. A= 10 cm , b= 24 cm and c= 26 cm

Answer 1

Answer:

(A) ² + (B)² = (C)²

(15)² + (20)² = (25)²

= 1. 225 + 400 = 625

2. (9)² + (12)² = (16)²

81 + 144 ≠256

3.(10)² + (24)² = (26)²

100 + 576= 676

1 and 3 are right angled triangle