Identifying Perpendicular Line Segments in a Three-Line Geometric Figure

Question

In the figure there are 3 straight line segments.

Which are perpendicular?

00:00 Found the perpendicular lines

00:04 A perpendicular line is a line that forms a right angle at the intersection point with the second line

00:09 Therefore all these lines are perpendicular

00:12 And this is the solution to the question

Let's remember that a perpendicular is a line that forms a right angle of 90 degrees with another line.

Let's pay attention to the right angles in the drawing, and note which lines create them:

AB is perpendicular to DC

AB is perpendicular to FE

$AB⟂DC \\ AB⟂FE$