Question

Check whether 3cm, 4cm and 5cm are the sides of right angled triangle​

Answer 1

The given lengths of the sides are 3 cm,4 cm and 5 cm

3^2=3×3=9;

4^2=4×4=16;

5^2=5×5=25

We found that 

9+16=25

32+42=5^2

Therefore, the triangle is a right-angled triangle. 

Note : In any right-angled, triangle the hypotenuse happens to be the longest side. 

In this example the side with length 5 cm is the hypotenuse.

Answer 2

Step-by-step explanation:

• altitude² + base² = hypotenuse²
• 3² + 4²
• = 9 + 16
• = 25 = 5²
• this is a right-angled triangle