Answer: No question but I'll say what I know to try to answer your question. Triangles are 3 sided shapes with at least one 45 degree angle. There are types of triangles such as isosceles, scalene, and equilateral triangles.
Area = length * width length = (2 * width) - 1 Since length cannot be negative, w = -2 is not a solution. Thus, is your width. Since length = 2 * width - 1, plug in width: