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In figure, find which of the lines l, m, n, p, q and r are parallel and why?

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In figure, find which of the lines l, m, n, p, q and r are parallel and why?

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Best answer

∠PAC + ∠QCA = 75° + 105° = 180° (Sum of the interior angles)

n || p

Also ∠ACD = ∠CDS = 114° (alternate angles)

m || r

Hence n || p and m || r

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