tangent of a circle - Construct a tangent to a circle at a given point when the centre of the circle is known

Krishna (last edited 7 months ago) (Expert, Educator @Qalaxia)

Step 1: Draw a circle with centre ‘O’ and mark a point ‘P’ anywhere on it. Join O

Step 2: Draw a perpendicular line through the point P and name it as XY, as shown in the figure.

Step 3: XY is the required tangent to the given circle passing through P.