Maths
posted 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?

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.