Video Transcript
Is line segment 𝐴𝐵 parallel or
perpendicular to line segment 𝐵𝐶?
First, let’s highlight line segment
𝐴𝐵 there. And line segment 𝐵𝐶 is here. Line segment 𝐴𝐵 and line segment
𝐵𝐶 share an end point, point 𝐵. This is an intersection. And we know that parallel lines
never intersect.
Line segment 𝐴𝐵 cannot be
parallel to line segment 𝐵𝐶. We also know that, inside a
rectangle, all four angles measure 90 degrees. The angle at their intersection is
90 degrees. And that confirms that line segment
𝐴𝐵 is perpendicular to line segment 𝐵𝐶.
