Question
Using a set square and a ruler, test whether l || m in the following cases:
✓
Answer
Place the ruler so that one of its measuring edges lies along the line l. Hold it firmly with one hand. Now place a set square with one arm of the right angle coinciding with the edge of the ruler. Draw line segments between l and m (say PM, RS, AB) with the set square. Now, we see that PM = AB = RS. Thus, we can say that l || m.
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