Answer:
Option 1. 9, 40, 41 .
Step-by-step explanation:
As we know in a right angle triangle as per Pythagoras theorem
Hypotenuse² = height² + base²
Or (Longest side)² = sum of square of other two sides.
For option A
√(40² + 9²) = √(1600 + 81) = √(41)²=41
It is a right option.
For 2, 3, 4
√(2²+3²) = √(4+9) = √13≠ √4²
Therefore not the right angle triangle.
For 8, 9, 10
√(8² + 9²) = √(64 + 81) = √145 ≠ √10²
So triangle is not a right angle triangle.
For 12, 15, 20
√(12²+15²) = √(144+225) = √369 ≠ √20²
So not a triangle angle triangle.
