Question

3cm 4cm 7cm are not the lenghts of the triangle .give reason​

Answer 1

Here it can be checked by the inequality property of triangle

Sum of two sides is greater than third side of triangle

here

3+4= 7

here it can not form the triangle as the sum equal to third side

Answer 2

Answer:

Here, 3+4=7

As, we know that the third side is always greater than the sum of other two sides in a triangle.

But here sum of other two sides =7 & it is not greater than the third side .

So, 3cm , 4 cm , & 7 cm are not the lengths of a Triangle.