How many pairs of perpendicular lines are there in the diagram?
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How many pairs of perpendicular lines are there in the diagram?
Remember that perpendicular lines are vertical lines that form a right angle of 90 degrees between them.
The right angle we have in the drawing is angle ABC.
The lines that form the angle ABC are AB and BC.
Since we have one marked angle in the triangle, we must have a pair of perpendicular lines.
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What do the four figures below have in common?
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