Asked by Nishant Nain

Reena draws a triangle with its sides are 3 cm and 5 cm. Is the triangle drawn by
Reena a right angled triangle? Why?
Answered by Steve
there are lots of triangles with two sides 3 and 5.

Now, if the 3rd side is 4, then you have a right triangle.

Or, if the 3rd side is √34 you have a right triangle.