ABC is an equilateral triangle and AD is the altitude on BC. If the coordinates of A are (1, 2) and that of D are (-2, 6), then what is the equation of BC?

NDA 2025 Mathematics question

is an equilateral triangle and is the altitude on . If the coordinates of are and that of are , then what is the equation of ?

Answer: (D)

Slope of . Since , slope of , and

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Question ID VK-030066