Question

In the following figure, how will make a tangent from the point outside the circle?

(a) By drawing a semicircle with diameter as OA

(b) By drawing a perpendicular bisector

(c) By drawing an angle bisector

(d) By drawing circle with the same radius from A

This question was posed to me by my school teacher while I was bunking the class.

Origin of the question is Drawing Tangents and Normals for Different Conditions of Circle topic in division Geometrical Construction of Engineering Drawing

Answer 1

Right choice is (a) By drawing a semicircle with diameter as OA

The best I can explain: In the given figure, we can draw a tangent from the point outside i.e. point A to the circle by drawing a semicircle with a diameter as OA. The intersection point of this semicircle with the circle is joined with the point A to form the tangent.