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Questions and Answers
What is the region bounded by two concentric circles called?
What is the region bounded by two concentric circles called?
- Circumference
- Arc
- Annulus (correct)
- Chord
What is a line segment whose endpoints lie on the circle called?
What is a line segment whose endpoints lie on the circle called?
- Circumference
- Arc
- Centre
- Chord (correct)
What is the point equidistant from all points on the circle called?
What is the point equidistant from all points on the circle called?
- Annulus
- Centre (correct)
- Circumference
- Arc
What is any connected part of a circle called?
What is any connected part of a circle called?
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What is the distance between any point of the circle and the centre called?
What is the distance between any point of the circle and the centre called?
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Study Notes
Key Geometric Terms Related to Circles
- The region between two concentric circles is called an annulus, characterized by its ring shape and defined by the radii of the inner and outer circles.
- A line segment with both endpoints lying on the circumference of the circle is known as a chord; chords can vary in length and are essential in circle geometry.
- The point that is equidistant from all points on the circle is referred to as the center of the circle, a central feature in defining its properties and equations.
- Any connected section of the circle is termed an arc; arcs can represent portions of the circumference and vary in length and size.
- The distance from any point on the circle to the center is known as the radius; it is crucial in determining the circle's size and area.
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