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Worksheet: Identifying and Using Parts of a Circle

In this worksheet, we practice identifying and using parts of a circle such as the radius, chord, and diameter to solve problems.

Q1:

What is the name of the following shape?

  • Aplus
  • Bstar
  • Ccircle
  • Dtriangle
  • Esquare

Q2:

Are all the radii of a circle equal in length?

  • Ayes
  • Bno

Q3:

Is the diameter the longest chord in a circle?

  • Ayes
  • Bno

Q4:

The length of the radius of a circle is the length of its diameter.

  • Ahalf
  • Bequal to
  • Ctwice

Q5:

What is the name for a chord that passes through the centre of a circle?

  • Aa diameter
  • Bthe centre
  • Ca radius

Q6:

Which of the following correctly defines a circle?

  • AA circle is the set of points in a plane that are different distances away from the center.
  • BA circle is the set of points in a plane with a limited number of sides.
  • CA circle is the set of points in a plane that are the same distance from the a given point called the center.
  • DA circle is the set of points in a plane with a single curved side.
  • EA circle is the set of points in a plane that does not have any lines of symmetry.

Q7:

In the given figure, which of the following would represent the chord passing through and ?

  • A
  • B
  • C
  • D
  • E

Q8:

Identify all the radii of circle .

  • A
  • B
  • C

Q9:

Identify all the radii in the following circle:

  • A
  • B
  • C

Q10:

Identify the radii of the circle.

  • A
  • B
  • C
  • D

Q11:

Identify the diameter of this circle.

  • A
  • B
  • C
  • D

Q12:

Which segment in this circle is a chord?

  • A
  • B
  • C

Q13:

In the following figure, determine all the chord(s) of the circle.

  • A
  • B
  • C

Q14:

Given that , find the radius to the circle .

Q15:

If the length of diameter of circle is 158 cm, find the radius of the circle.

Q16:

Determine the diameter of the circle , given that its radius .

Q17:

In the circle , if , find the length of .

Q18:

What is the radius of a circle whose diameter is 18?

Q19:

What is the diameter of a circle whose radius is 3?

Q20:

If the diameters of circles and are 2 cm and 6 cm, respectively, determine the length of .

Q21:

Find the length of .

Q22:

Circles and are of radii 11 and 18 and touch internally. Determine .

Q23:

Given that and in the two concentric circles shown below, find the length of .

Q24:

In the given circle, cm and cm. Determine the lengths of and .

  • A,
  • B cm,
  • C,
  • D,

Q25:

Suppose , , and . What is the length of ?

  • Published