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The line perpendicular to the tangent line is called?

The line perpendicular to the tangent line is called? Correct Answer Normal line

একটি রেখা আরেকটি রেখার উপর লম্ব হলে বা লম্ব রেখাটি অন্য রেখার স্পর্শক হলে তা হবে Normal line.

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