3/5 Geo Quiz Review

3/5 Geo Quiz Review

Crash Course

Circle Vocab

Multiple Choice

Name a radius.

• AF
• CD
• HJ
• DG

Multiple Choice

• How many chords are there: 1
• How many chords are there: 5
• How many chords are there: 3
• How many chords are there: 0

Multiple Choice

• Name the circle: Circle B
• Name the circle: Circle DE
• Name the circle: Circle A
• Name the circle: Circle DBC

Multiple Choice

A line that touches a circle in just one point.

• tangent
• chord
• secant
• radius

Multiple Choice

A segment that connects two points on a circle; may or may not pass through the center of the circle.

• tangent
• secant
• chord
• diameter

Multiple Choice

A segment connecting two points on a circle that passes through the center.

• diameter
• radius
• secant
• tangent

Multiple Choice

A segment that connects the center of a circle with a point on the circle.

• tangent

• secant

• diameter

• radius

Radius vs. Diameter vs Circumference

• Radius: Half of the circle from the center. The radius is HALF of the diameter.  

• Diameter: The full length of the circle through the center. The diameter is twice the radius.

• Circumference: The distance around the circle.  $C=\pi\cdot d$   $C=2\pi r$  

Multiple Choice

Determine the radius of the penny

• 59.66 mm
• 9.5 mm
• 38 mm
• 119.32 mm

Multiple Choice

Steven purchases a bowl. The diameter of the bowl is 14 cm. What is the circumference of the bowl?

• 28 cm
• 43.96 cm
• 87.96 cm
• 7 cm

Multiple Choice

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

Multiple Choice

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Multiple Choice

What is the radius?

• 18
• 72
• 38
• 14

Multiple Choice

What is the diameter?

• 8
• 16
• 10
• 4

Multiple Choice

The diameter of a circle is:

• The measurement around the circle.
• The distance from an edge of a circle to another edge.
• The distance from the center of the circle to an edge of a circle
• The distance from an edge of a circle to another edge through the center. 

Multiple Choice

The radius of a circle is

• The measurement from the center of a circle to an edge of the circle.
• The measurement around the circle
• The measurement from and edge of the circle to another edge through the center
• A line perpendicular to the diameter of the circle

Inscribed Polygons for Circumference

• Sometimes we won't have the diameter AB. They will give us the length AD and DB, but we will have to solve for AB using the Pythagorean formula.

• If AD was 3, DB was 4, what would AB be? What would the circumference be?

Arc Measure

• If you are given a Central Angle (an angle whose vertex is on the center), the central angle measure= the arc measure.

• If you are given an inscribed angle (an angle whose vertex is on the circle), the inscribed angle= 1/2 of the arc measure. Or Arc measure=2 x inscribed angle.

Multiple Choice

• A
• B
• C
• D

Multiple Choice

• A
• B
• C
• D

Multiple Choice

Solve for x. 

• 5
• 20
• 40
• 85

Multiple Choice

What is the measure of ∠PTQ?

• 100°
• 140°
• 180°
• 120°

Multiple Choice

What is the measure of arc AYB

• 50
• 100
• 180
• 260

Multiple Choice

• x = 160
• x = 40
• x = 80
• x = 360

Multiple Choice

What is the measure of arc AD?

• 38
• 142
• 180
• 153

Multiple Choice

Name a major arc.

• ABD
• BDA
• BCD
• DA

Multiple Choice

Name a minor arc

• AD
• ADB
• AB
• CD

Arc Length

• The distance of an arc, not the measurement in degrees.

• Have to use the formula!

Multiple Choice

Find the length of the arc to 2dp

• 5.76cm

• 18.85cm

• 7.33cm

• 11.52cm

Multiple Choice

Find the length of the arc to 2dp

• 21.99mm

• 65.97mm

• 32.99mm

• 11.00mm

Multiple Choice

Find the length of the arc to 2dp

• 43.98cm

• 439.82cm

• 219.91cm

• 21.99cm

Multiple Choice

Find the length of the arc to 2dp

• 32.11cm

• 16.05cm

• 780.84cm

• 32.99cm

Multiple Choice

Find the length of the arc to 2dp

• 1.95cm

• 3.91cm

• 0.98cm

• 2.93cm

Multiple Choice

Find the length of the arc to 2dp

• 2.09m

• 301.59m

• 1.05m

• 2.51m

Multiple Choice

Find the length of the arc to 2dp

• 31.42cm

• 15.71cm

• 282.74cm

• 23.56cm