The length of the side can be 11ft. [11ft<12ft].
What is a triangle?
A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted ΔABC. In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane.
Given,
The length of the third side of the triangle has to be greater than zero (otherwise there is no triangle), but less than the sum of the other two sides (again, otherwise there is no triangle).
So, in this example, third side must be >0ft, but <12ft. [6ft + 6ft = 12ft]
Given sides L of 11ft, 13ft, 18ft and 15ft, only the first three lengths fit the rule. [0<L<12ft]
The length of the side can be 11ft. [11ft<12ft].
To know more about triangles refer to :
https://brainly.com/question/9047127
#SPJ2
