Isosceles Triangle

Geometry Level 5

\(\triangle{ABC}\) is an isosceles triangle with \(AB=AC=2\) cm. There are \(100\) points \(P_1, P_2, \cdots, P_{100}\) on the side \(BC\). Find the value of \[\sum_{i=1}^{100}AP_i^2+BP_i \cdot P_iC.\]

Details and assumptions

The points need not be equally spaced.

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