Class 4 chapter 8

A circle is a _________ figure.

• closed

• open

• semi closed

• semi open

Radius is _______ of diameter.

• double

• half

Which of the following is NOT a part of a circle?

• center

• diameter

• circumference

• corner

The plural of 'radius' is -

• raddies

• radiuses

• radii

• radiusss

The diameter of a circle is 18 cm. The radius will be ________.

• 5 cm

• 12 cm

• 9 cm

• 10 cm

The radius of a circle is 15 cm. The diameter will be _______ cm.

• 7.5 cm

• 30 cm

• 25 cm

• 10 cm

In the given diagram, O is ________ of the circle.

• diameter

• circumference

• center

• arc

The length of the boundary of a circle is called its _____________________.

• arc

• circumference

• chord

• sector

A circle has four corners.

• TRUE

• FALSE

A circle is formed by a _____________.

• straight line

• curved line

• zig-zag line