Gr 9 circles

The distance across a circle through its center is called the _____.

• diameter
• radius
• π
• center

Tags

CCSS.HSG.CO.A.1

What is the circumference?

• 48
• 96
• 24
• 18

Tags

CCSS.7.G.B.4

What is the formula for circumference of a circle given the diameter?

• C = π r
• C = 2 π r
• C = π d
• C = 2 π d

Tags

CCSS.7.G.B.4

• Area of a Circle
• Circumference of a Circle
• Area of a Trapezoid
• Area of a Triangle

Tags

CCSS.7.G.B.4

If there are two separate circles drawn apart from each other, then the maximum number of common points they have:

• 0

• 1

• 2

• 3

The angle subtended by the diameter of a semi-circle is:

• 90

• 45

• 180

• 360

If a line intersects two concentric circles with centre O at A, B, C and D, then:

• AB = CD

• AB < CD

• AB > CD

• None of the above

Equal _____ of the congruent circles subtend equal angles at the centers.

• Segments

• Radii

• Arcs

• Chords

A chord is at a distance of 8 cm from the centre of a circle of radius 17 cm. The length of the chord is

• 25 cm

• 30 cm

• 9 cm

• 12 cm

Angle in a semicircle is

• 180

• 90

• 360

• 45