Draw a circle of radius 4 cm and take a point P on its circumference. Construct a tangent to the circle at P.

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Draw a circle of radius 4 cm and take a point P on its circumference. Construct a tangent to the circle at P.

In old style math, a span of a circle or circle is any of the line fragments from its middle to its edge, and in more current utilization, it is additionally their length.

In math, the circumference is the edge of a circle or oval.

A digression (tangent) to a circle is a straight line which contacts the circle at just one point.

Steps for constructions:

Draw a circle using radius
$4cm$
with center O using a ruler.
Then make two arc
Then join the center O to the given point P.
Draw a perpendicular to OP, on the give point P by joining the two we made before.
So, PQ is the required tangent.

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