# Find the distance between P(x1, y1) and Q(x2, y2) when (i) PQ is parallel to y-axis (ii) PQ is parallel to x-axis

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Find the distance between P(x1, y1) and Q(x2, y2) when

(i) PQ is parallel to y-axis

(ii) PQ is parallel to x-axis

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(i) When PQ is parallel to x -axis then