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Questions and Answers
What is the definition of a circle?
What is the definition of a circle?
- A polygon with no sides
- A closed figure with straight sides
- A three-dimensional geometric shape
- A set of points in a plane equidistant from a given point (correct)
What is the term used for the distance around the circle?
What is the term used for the distance around the circle?
- Circumference (correct)
- Radius
- Area
- Diameter
Which formula is used to calculate the area of a circle?
Which formula is used to calculate the area of a circle?
- $ rac{1}{2} imes r imes h$
- $ ho^2 imes ext{Ï€}$
- $ ext{Ï€} imes r^2$ (correct)
- $ ext{Diameter} imes ext{Height}$
What does the radius of a circle represent?
What does the radius of a circle represent?
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Which of the following statements is true about a circle?
Which of the following statements is true about a circle?
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Study Notes
Definition of a Circle
- A circle is a two-dimensional geometric shape consisting of all points that are equidistant from a fixed center point.
Distance Around the Circle
- The distance around a circle is referred to as the circumference.
Area of a Circle
- The formula used to calculate the area of a circle is A = πr², where A represents area and r represents the radius.
Radius of a Circle
- The radius of a circle denotes the distance from its center to any point on its circumference, essentially representing half of the diameter.
True Statements About a Circle
- Circles have constant curvature; all points on the circumference are the same distance from the center.
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