Foundation Mathematics Primary 3 Geometry

Which of the following best describes perpendicular lines?

A Lines that never meet
B Lines that meet at a right angle (90°)
C Lines that are the same length
D Lines that run in the same direction
Show Worked Solution

Worked Solution

Step 1: Recall the definition. Perpendicular lines are two lines that meet (intersect) at a right angle of exactly 90°. Step 2: Identify examples. The sides of a square meet at 90° at each corner — those sides are perpendicular. Step 3: Use a set square or the corner of a piece of paper to verify 90°. Answer: Lines that meet at a right angle (90°).

Correct answer: Lines that meet at a right angle (90°)

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