Circles

A diameter divides a circle into

1. Two unequal parts
2. Two semicircles
3. Four quadrants only
4. Three equal parts

Two circles are congruent if they have

1. Equal diameters only
2. Equal radii
3. Equal circumferences only
4. Equal chords

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

1. Radius
2. Chord
3. Arc
4. Vertex

The radius drawn to the point of contact of a tangent is

1. Parallel to the tangent
2. Perpendicular to the tangent
3. Equal to the tangent
4. Inclined at 45°

The point where a tangent touches a circle is called the

1. Centre
2. Point of contact
3. Radius
4. Chord

Equal chords of congruent circles subtend

1. Equal angles at the centre
2. Different angles at the centre
3. Right angles only
4. Straight angles

If the radius of a circle is 8 cm, the diameter is

1. 4 cm
2. 8 cm
3. 16 cm
4. 24 cm

A line segment joining any two points on a circle is called a

1. Radius
2. Diameter
3. Chord
4. Tangent

Equal chords of a circle are equidistant from the

1. Circumference
2. Diameter
3. Centre
4. Radius

Which of the following is the longest chord of a circle?

1. Radius
2. Arc
3. Diameter
4. Tangent

The diameter of a circle is

1. Equal to the radius
2. Twice the radius
3. Half the radius
4. Three times the radius

The line segment joining the centre of a circle to any point on the circle is called the

1. Diameter
2. Chord
3. Radius
4. Arc

A circle is the set of all points in a plane that are at a fixed distance from a

1. Diameter
2. Chord
3. Centre
4. Radius