Question

How is a normal to a tangent drawn?

(a) Angle bisector

(b) Perpendicular bisector

(c) Rectangle

(d) Semicircle

I got this question in an international level competition.

My doubt stems from Drawing Tangents and Normals for Different Conditions of Circle in chapter Geometrical Construction of Engineering Drawing

Answer 1

The correct option is (b) Perpendicular bisector

The explanation: We draw a normal to a tangent by using perpendicular bisector. Cut the tangent at two points on both sides of the point of contact and then keeping center at the new intersection points cut another arc on the up and down of the point of contact. Join these points and you get normal.