Measure the distance at different places. If the walls are parallel, then the distance will be the same.
Chat with our AI personalities
No.
Any irregular polygon with 4 or more sides can have only one pair of parallel sides. For example, a child's drawing of the silhouette of a house (the base, two walls and a triangular roof) is a pentagon and the two walls are the 1 pair of parallel sides.
Points cannot be parallel or perpendicular. So they never are.
You pass another line through both of them and measure the angles. If the first two lines form the same angle with the third line, the first two are parallel.
If the lines are straight and have the same slope they are parallel, no matter what the y intercept is