Determine how many pairs of perpendicular lines are shown in the diagram?
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Determine how many pairs of perpendicular lines are shown in the diagram?
Perpendicular lines are lines that form a right angle of 90 degrees between them.
Our right angles are:
The lines that form angle BAE are: BA+AE
The lines that form angle DEA are: DE+EA
Since in the drawing we have 2 angles of 90 degrees marked, we must have 2 pairs of perpendicular lines.
2
What do the four figures below have in common?
Look for the small square symbols in the corners where lines meet. These squares indicate 90° angles, which means those two lines are perpendicular to each other.
An angle is the space between two lines, but a line pair refers to the two specific lines that create that angle. Each right angle involves exactly one pair of perpendicular lines.
Yes! In this pentagon, line AE is perpendicular to both line AB and line ED, creating two different pairs of perpendicular lines.
Only lines that meet at exactly 90° are perpendicular. The other angles in this pentagon are not right angles, so those line pairs don't count.
Systematically check each corner of the figure for square symbols. In this diagram, you should find exactly 2 squares marking the right angles.
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