Lines and Segments
Angles
Arcs
Equation of a Circle
Circumference and Area
100
Name all 4 features of the circle under this category.
Radius, Diameter, Chord, Tangent
100
Draw a circumscribed angle.
100
Definition of a Minor Arc
Arc that is less than 180o
100
(h,k) and "r" stands for ________ and ________ in the equation of the circle.
(h,k) : center
r : radius
100
What is the difference between the circumference and the area formula?
Circumference uses the diameter or 2r, while the area formula uses the radius squared (r2)
200
Define the tangent line of a circle.
Tangent is the line that intersects a circle exactly once.
200
Find x.
80o
200
How many letters do I need to name a major arc?
3 letters
200
Determine the equation of the circle with center (6, 5) and radius 6.
(x-6)2 +(y-5)2 = 36
200
The diameter of a circle is 16 cm. Find its circumference in terms of 𝜋.
16pi cm
300
Name a chord.
DG, CD, HF
300
Find the measurement of arc BC.
57o
300
Name a minor arc.
Answers will vary.
Examples: arc AE, AD, CD, ...
300
Determine the equation of the circle with center (3, -1) and radius 4.
(x-3)2 + (y+1)2 = 16
300
The radius of a circle is 5 in. Find its area in terms of 𝜋.
25pi in^2
400
Is EG a radius? Why?
EG is not a radius because the radius should connect to the center.
400
If the measurement of angle ACB is 20, then what is the measurement of arc AB?
40o
400
Name a major arc.
Answers will vary.
Examples: arc ACD, ABE,...
Non-examples: arc EAB, BCE
400
Find the center and the radius of the circle:
(x+3)2 + (y−10)2 = 49
Center: (-3, 10)
Radius: 7
400
The radius of a circle is 12 ft. Find its circumference in terms of 𝜋.
24pi ft
500
Out of the lines and segments that we learned, which one is not in this picture?
Tangent
500
Find the ?
52o
500
Solve for x.
x = 20
500
Find the center and radius of the circle:
(𝑥−8)2+(𝑦−4)2 = 81
Center: (8, 4)
Radius: 9
500
The diameter of a circle is 4 ft. Find its area in terms of 𝜋.
4pi ft^2