1.

Let A(0,1),B(1,1),C(1,−1) and D(−1,0) be four points. If P is any other point, then the minimum value of PA+PB+PC+PD is equal to

Answer»

Let A(0,1),B(1,1),C(1,1) and D(1,0) be four points. If P is any other point, then the minimum value of PA+PB+PC+PD is equal to



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