Perimeter of triangle 3, 4, 9

Step by step, with the reason for every step · Perimeter and area · Geometry

Step by step

Question: find the perimeter of a triangle with sides 3, 4, 9.

The two short sides together are 7.

That is not longer than 9.

They can't meet.

So this triangle is impossible.

4 + 3 < 9 impossible

Answer

4 + 3 < 9 impossible