Hakim drew a capital letter H on square grid paper. The letter H has two vertical strokes (left and right) and one horizontal crossbar joining them in the middle. The crossbar meets each vertical stroke at a right angle. How many pairs of parallel lines are there in the letter H?
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Worked Solution
Step 1: Identify the three line segments in the letter H.
Left vertical stroke (LV)
Right vertical stroke (RV)
Horizontal crossbar (HC)
Step 2: List all pairs and check each.
LV & RV: both vertical, same direction, never cross → parallel ✓ (1 pair)
LV & HC: they meet at a right angle (given) → perpendicular ✗
RV & HC: they meet at a right angle (given) → perpendicular ✗
Step 3: Only 1 parallel pair exists.
Answer: 1
Correct answer: 1
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