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Let BC be a line segment on which D, E are two points such that BE > BD and BC · DE = BD · CE. A is any other point not on the line BC then prove that BE subtends a right angle at A if AE bisects the angle DAC.

Let BC be a line segment on which D, E are two points such that BE > BD and BC · DE = BD · CE. A is any other point not on the line BC then prove that BE subtends a right angle at A if AE bisects the angle DAC.

Grade:10

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