To form a triangle every side must be smaller in length than the sum of the two other sides.
For example: sides denoted by a,b,c for a triangle to form a<b+c b<a+c c<a+b Thus in the case of the <em>Isosceles </em>triangle with side lengths 1,8,8 the rules aforementioned are fulfilled. This means that a triangle with said side lengths can exist.
The slope of the red line is 5. The correct answer is option B. 5
Two parallel lines, always have the same slope. Since the green and red line are parallels and the green line has slope 5, the slope of the red line is also 5.
