In the figure there are 3 straight line segments.
Which are perpendicular?
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In the figure there are 3 straight line segments.
Which are perpendicular?
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
Determine which lines are parallel to one another?
Look for small square symbols at the intersection points! These squares indicate 90-degree angles. Also, perpendicular lines create an L-shape or cross that looks perfectly square.
Not all at once in 2D! In this figure, line AB is perpendicular to both DC and FE, but DC and FE are not perpendicular to each other - they're actually parallel.
The squares might be small or faint. Look carefully at each intersection point. You can also use the fact that perpendicular lines create equal adjacent angles of 90 degrees each.
Yes! Use the symbol to show perpendicularity clearly. Write it as AB⊥DC rather than just saying "AB and DC are perpendicular."
It depends on the figure! In this problem, there are exactly two perpendicular pairs. Don't assume there's always just one - carefully check every intersection.
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