G9-MATH-L9 Circles

What is the angle subtended by a chord at the center of a circle called?

• Central angle
• Inscribed angle
• Reflex angle
• Minor angle

If two chords of a circle subtend equal angles at the center, what can be concluded about the chords?

• They are equal
• They are unequal
• They are parallel
• They are perpendicular

What happens to the angle subtended by a chord at the center as the length of the chord increases?

• It decreases
• It increases
• It remains the same
• It becomes zero

What is the relationship between the perpendicular from the center of a circle to a chord and the chord itself?

• It bisects the chord
• It is parallel to the chord
• It is equal to the chord
• It is longer than the chord

If two equal chords are drawn in a circle, what can be said about their distances from the center?

• They are equal
• They are unequal
• One is greater than the other
• They cannot be determined

What is the angle subtended by the major arc at the center compared to the angle subtended by the minor arc?

• It is equal
• It is greater
• It is smaller
• It is half

In a cyclic quadrilateral, what is the sum of the opposite angles?

• 90°
• 180°
• 360°
• 270°

If the diagonals of a cyclic quadrilateral are diameters of the circle, what shape does it form?

• Square
• Rectangle
• Rhombus
• Trapezium

What can be concluded if two arcs of a circle are congruent?

• Their corresponding chords are equal
• Their lengths are different
• They subtend different angles
• They are not related

What is the relationship between the angles subtended by an arc at the center and at any point on the circle?

• They are equal
• The angle at the center is double
• The angle at the center is half
• They are unrelated