10 Questions
What is a circle in Geometry defined as?
The set of points equidistant from a single point
What is the distance across a circle called?
Diameter
Which value represents the ratio of a circle's circumference to its diameter?
3.14
What type of number is Pi?
Irrational number
How is the perimeter of a circle commonly known?
Circumference
What is the center of a circle?
The point equidistant from all points on the circle
What does the diameter of a circle represent?
The distance across it, twice the length of the radius
Which term refers to the distance around a circle?
Circumference
What property makes Pi an irrational number?
It is infinitely accurate
How is Pi commonly approximated in most math calculations?
3.14
Study Notes
- A circle in Geometry is defined as the set of points equidistant from a single point, forming a continuous shape.
- The center of a circle is the original point, and the distance from the center to any point on the circle is called the radius.
- The diameter of a circle is the distance across it, always being twice the length of the radius.
- The perimeter of a circle is known as the circumference, the distance around the circle.
- Pi (π) is a special number representing the ratio of a circle's circumference to its diameter, approximately equal to 3.14.
- Pi is an irrational number with decimal digits that never end or repeat, making it infinitely accurate.
- The value of Pi is commonly rounded to 3.14 for most math calculations, but it continues indefinitely.
Explore the key concepts related to circles in Geometry including definitions of a circle, center, radius, diameter, circumference, and the special number Pi (π). Learn how to calculate the circumference and understand the significance of Pi in circle calculations.
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