Concentric Circles and Their Properties

The video tutorial explains how to draw three concentric circles, C1, C2, and C3, each with the same center but different radii. It defines concentric circles as those sharing a common center but having different radii. The tutorial highlights the characteristics of these circles, emphasizing their shared center and varying radii.

What is the radius of the first circle C1?

• 3 cm

• 1 cm

• 2 cm

• 4 cm

What is the center of the first circle C1?

• C

• O

• B

• A

What is the radius of the second circle C2?

• 3 cm

• 4 cm

• 5 cm

• 2 cm

Which circle has a radius of 3 cm?

• C4

• C1

• C2

• C3

What is the radius of the third circle C3?

• 3 cm

• 4 cm

• 5 cm

• 6 cm

Which circle has the largest radius?

• C3

• C2

• C1

• C4

What is the common center of all three circles?

• C

• O

• B

• A

What defines concentric circles?

• Same center

• Same circumference

• Same diameter

• Same radius

Which of the following is true about concentric circles?

• They have the same center

• They have different centers

• They are not circles

• They have the same radius

In the given figure, which circles are concentric?

• C1 and C2

• C2 and C3

• C1, C2, and C3

• None