Practical Geometry Class 6 NCERT

A concentric Circle is

• A circle that shares the same center as another circle
• A circle that intersects with another circle at two points
• A circle that is inside another circle but does not share the same center
• A circle that does not intersect with any other circle

Answer explanation

A concentric Circle is two or more circles sharing the same center point.

Draw an axis of symmetry of a line segment AB

Answer explanation

An axis of symmetry, or perpendicular bisector, is exactly halfway of anything.

For example

The question that you just solved, with line segment AB, should have an axis of symmetry, or in other words, should intersect in such a way that

a) It is perpendicular to the line.

b) It cuts the line exactly into two equal parts.

Define Perpendicular

Answer explanation

Interesting fact - Mathematics is made from a Greek word máthēma, which means that which is learnt.

How many lines can be drown passing through two points A and B

• only 2

• So many

• Infinite

• only 1

On extending two parallel lines the distance between them will....

• Increase

• Decrease

• Remain Same

• Increase and decrease

Is the red line a radius or diameter of the circle?

• It is Radius

• It is Diameter

• This is a trick question

Draw a diameter and find its perpendicular bisector. Name the diameter OP and the Center C.

A diameter =

• The radius of a circle
• Half the radius of a circle
• Twice the radius of a circle
• The circumference of a circle
• A line passing the center and starting and ending at the circumference of a circle

If we cannot find out the radius by dividing the diameter, how can we make a circle?

• By using the circumference
• By using the area
• By using the diameter
• By finding the perpendicular bisector.

• None of the above

What is a circle?