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Question: exercises 1 let p11 32 pi11 and q150 be points...

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Exercises 1. Let P(1,1), 3,2), PI(-1,-1) and Q1(-5,0) be points in R2. Show that PQ = PiQi. 2. Let P(31-1), Q(-1,2), Pl (-2, 1) and Q1(-10,7) be points in R. Show that PQ || P1Q1
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