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Circles: Practice 4

Section A: Core Practice

Question 1mcq
If two chords of a circle are equidistant from the centre, what can be concluded?
A.The chords are diameters.
B.The chords are perpendicular.
C.The chords are equal in length.
D.The chords meet at the centre.
Question 2mcq
During a careful problem on computational thinking with circles, what is the diameter of a circle whose radius is 7 cm7\,cm?
A.7 cm7\,cm
B.14 cm14\,cm
C.21 cm21\,cm
D.49 cm49\,cm
Question 3mcq
A cyclic quadrilateral has one angle equal to 70∘70^\circ. What is the measure of its opposite angle?
A.110∘110^\circ
B.70∘70^\circ
C.90∘90^\circ
D.140∘140^\circ
Question 4mcq
In a circle, a perpendicular from the centre to a chord meets the chord at MM. What must be true about the chord?
A.The centre lies on the chord.
B.The chord becomes a diameter.
C.The chord has length equal to the radius.
D.MM bisects the chord.
Question 5mcq
If two chords of a circle are equidistant from the centre, what can be concluded?
A.The chords are diameters.
B.The chords are perpendicular.
C.The chords are equal in length.
D.The chords meet at the centre.

Section B: Application Practice

Question 6mcq
What is the diameter of a circle whose radius is 7 cm7\,cm?
A.7 cm7\,cm
B.14 cm14\,cm
C.21 cm21\,cm
D.49 cm49\,cm
Question 7mcq
A cyclic quadrilateral has one angle equal to 70∘70^\circ. What is the measure of its opposite angle?
A.110∘110^\circ
B.70∘70^\circ
C.90∘90^\circ
D.140∘140^\circ
Question 8mcq
In a circle, a perpendicular from the centre to a chord meets the chord at MM. What must be true about the chord?
A.The centre lies on the chord.
B.The chord becomes a diameter.
C.The chord has length equal to the radius.
D.MM bisects the chord.
Question 9mcq
If two chords of a circle are equidistant from the centre, what can be concluded?
A.The chords are diameters.
B.The chords are perpendicular.
C.The chords are equal in length.
D.The chords meet at the centre.
Question 10mcq
What is the diameter of a circle whose radius is 7 cm7\,cm?
A.7 cm7\,cm
B.14 cm14\,cm
C.21 cm21\,cm
D.49 cm49\,cm