They are hundred in number

Geometry Level 4

Δ A B C \Delta ABC is an isosceles triangle with A B = A C = 2 AB=AC=2 . There are 100 100 points P 1 , P 2 , P 3 , , . P 100 P_1,P_2,P_3,\ldots, .P_{100} on the side B C BC .

Write

m i = A P i 2 + B P i . P i C ( i = 1 , 2 , 3 , , 100 ) \large{m_i = AP_i^2 + BP_i . P_iC \qquad { (i=1,2,3,\ldots,100)}}

Find the value of m 1 + m 2 + + m 100 m_1+m_2+\cdots +m_{100} .


The answer is 400.

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