Simple circle stuff
Chords
Inscribed Angles
Secants
Miscellaneous
100
How do you calculate the area of a circle?
πr2
100
When two chords intersect in a circle, the angle between them is equal to the _______ of the arc angle formed by the chords.
Average
100
Arc angle = x, Inscribed angle = ?
x/2
100
When two secants intersect outside a circle, the angle between them is ____ of the __________ between the angles of the intercepted arcs.
Half of the Difference
100
Connecting the two ends of the intersected arcs to form triangles makes those triangles similar. True or False?
True
200
If the central angle of a circle is equal to 60 degrees what is the arc angle equal to?
60 Degrees
200
What is the formula to find the angle between the two intersecting chords in the circle?
(a° + b°) divided by 2
200
An inscribed angle whose ray passes through the center of the circle has measure equal to ___ ____ of the arc angle it intercepts.
One Half
200
What is the formula to find the angle between the two intersecting secants outside the circle?
a°/2– b°/2
200
When two chords intersect inside a circle, the _______ of the lengths of the segments of one chord equals the _______ of the lengths of the segments of the other chord.
Product, product
300
What is the definition of a circle?
A collection of points whose distance from the center point is fixed.
300
Arc JKL is 75 degrees and arc WXY is 65 degrees. What is the value of a?
a=70 degrees
300
If the arc angle of a circle is equal to 46 degrees what is the inscribed angle equal to?
23 Degrees
300
Calculate the measure of the secant angle in the circle provided.
21 degrees
300
What type of intersecting lines are these?
Intersecting chords
400
How many sides does a circle have as a regular polygon
An infinite amount
400
Arc HIJ is 38 degrees, JK is 44 degrees, and KLM is 68 degrees. What is the measure of A?
A=53 degrees
400
Which of the following is true about
in the given figure if
is the center of the circle?
AC is greater than AB.
None of the above
AC is equal to AB.
AC is less than AB.
AC is equal to AB
400
Find the measure of the tangent angle in the circle provided.
32 degrees
400
What type of intersecting lines are these?
Intersecting Secant Lines
500
What is the angle at the center of the circle?
The central angle
500
Arc NML is 60 degrees, NO is 110, and OPQ is 20 degrees. What is the value of Z?
Z=40
500
What is the measure of angle BAC?
42.5 degrees
500
Calculate for the angle measure of theta using the diagram below.
45 degrees
500
What does this diagram represent?
Tangents Imply Equal Lengths