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Joan of Arcs
Round and Round We Go
A Piece of Pie
Touching a Circle
How Do I Calculate That?
100
Represented by the letter "s"
What is arc length?
100
Set of all points a given distance from a given point
What is a circle?
100
A letter of the Greek alphabet; an approximate value of it is 3.14
What is pi?
100
A segment drawn from the center of a circle to a point on the circle; length is 1/2 length of the diameter
What is a radius?
100
pi x radius x 2
What is the formula for the circumference of a circle?
200
Two endpoints on a circle and all of the points on the circle between those two endpoints.
What is an arc?
200
Twice the length of a radius
What is the diameter?
200
Pi is the ratio of the ............. of a circle to its diameter
What is the circumference?
200
Segment joining two points on the circle
What is a chord?
200
pi x (radius) x (radius)
What is the formula for the area of a circle?
300
Arc length greater than 180
What is a major arc?
300
Total number of degrees in a circle
What is 360 degrees?
300
A number that cannot be written as a fraction, repeating decimal or terminating decimal; pi is an example
What is an irrational number?
300
Line containing a chord
What is a secant?
300
(angle measure x circumference) divided by 360
What is the formula for arc length?
400
Arc length less than 180 degrees
What is a minor arc?
400
Distance around a circle
What is the circumference?
400
This ancient Greek philosopher and scientist studied Pi
Who is Archimedes?
400
Type of polygon drawn inside a circle; each of the polygons vertices touch the circle
What is an inscribed polygon?
400
(angle measure x area of circle) divided by 360
What is area of an arc?
500
180 degree arc, half of a circle
What is a semi-circle?
500
Term used to refer to circles of different sizes that share the same center
What are concentric circles?
500
Introduced the symbol for Pi for mathematical use in 1706
Who is William Jones?
500
Line that touches a circle in only one point; the slope of this is called a derivative and is a calculus basic concept
What is a tangent?
500
(x - x1) ^2 + (y - y1)^2 = radius ^ 2
What is the formula/equation of a circle?