O P Malhotra, S K Gupta and, Anubhuti Gangal Solutions for Chapter: Circles, Exercise 1: Exercise

Draw circles of radii $3\mathrm{cm}, 4.5\mathrm{cm} \mathrm{and} 5.2\mathrm{cm}$ each having the same centre $O$. What is the name given to such circles?

Draw a circle with AB as diameter where AB = $6.4cm$

In the figure given below, PT is tangent to the circle with centre O and PQ is the diameter through P. PR and QR are chords of the circle. If $\angle R\mathrm{PT}=40°$, then find $\angle \mathrm{PQR}$

O is the center of the circle in each figure. Find the size of each lettered angle.

O is the centre of the circle. Find the value of $a$.

$O$ is the centre of the circle in figure. Find the size of each lettered angle.

O is the center of the circle in each figure. Find the size of each lettered angle.

Which of the following pairs of lines can be parallel?

$1.$ Two tangents to a circle                                            $2.$ Two diameters of a circle

$3.$ A chord of a circle and a tangent to a circle.             $4.$ Two chords of a circle