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Definitions
Circle components
Formulas
Parts of a Circle
Word Problems
100
The set of all points on a plane that are a fixed distance from a center
What is circle
100
A line that goes from one point to another on the circle's circumference
What is chord
100
2 × Radius
What is Diameter
100
Quarter of a circle
What is a Quadrant.
100
A circle has a diameter of 10. What is the radius?
What is 5
200
It is the distance from the center outwards.
What is radius
200
A line that "just touches" the circle as it passes by
What is tangent
200
2 × Pi × Radius
What is Circumference
200
The smaller sector of a circle
What is the minor sector
200
A circle has a radius of 10. What is the diameter?
What is 20
300
It goes straight across the circle, through the center.
What is diameter
300
a part of the circumference
What is an arc
300
Pi times the radius squared
What is the area of a circle
300
The larger sector of a circle
What is a major sector
300
A circle has a radius of 1. What is the area of the circle?
What is Pi (3.141592654)
400
It is the distance once around the circle.
What is circumference
400
A wedge of a circle made from two radii.
What is a sector
400
The result when we divide the circumference by the diameter
What is Pi (3.141592654)
400
Half a circle
What is a Semicircle
400
Number of degrees in a full circle
What is 360
500
The result when we divide the circumference by the diameter.
What is the number (Pi) 3.141592654
500
A line that intersects a curve or circle at two points
What is a secant
500
Pi × Diameter
What is circumference
500
The unit used to measure angles
What is degrees
500
Number of degrees in a half circle
What is 180