Circle Basics Quiz
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Questions and Answers

What is the distance between any point of the circle and the centre called?

  • Diameter
  • Chord
  • Radius (correct)
  • Circumference

What is the length of one circuit along the circle called?

  • Chord
  • Circumference (correct)
  • Diameter
  • Radius

What is a line segment whose endpoints lie on the circle called?

  • Radius
  • Circumference
  • Chord (correct)
  • Diameter

What is the point equidistant from all points on the circle called?

<p>Centre (A)</p> Signup and view all the answers

What is a ring-shaped object, the region bounded by two concentric circles called?

<p>Annulus (A)</p> Signup and view all the answers

What is any connected part of a circle called?

<p>Arc (A)</p> Signup and view all the answers

What is the region of the plane bounded by a circle called?

<p>Disc (C)</p> Signup and view all the answers

What is a line segment joining the center of a circle with any single point on the circle called?

<p>Radius (B)</p> Signup and view all the answers

What is a region bounded by two radii of equal length with a common center and either of the two possible arcs called?

<p>Sector (C)</p> Signup and view all the answers

What is an extended chord, a coplanar straight line intersecting a circle in two points called?

<p>Secant (A)</p> Signup and view all the answers

What does the word 'circle' derive from?

<p>Ring (A)</p> Signup and view all the answers

What does Euclid's definition of a circle state?

<p>A plane figure bounded by one curved line (A)</p> Signup and view all the answers

What is the region bounded by a chord and one of the arcs connecting the chord's endpoints called?

<p>Segment (D)</p> Signup and view all the answers

What may be considered as open or closed, not containing their boundaries, according to the text?

<p>Disc and Segment (D)</p> Signup and view all the answers

What did prehistoric people make that included stone circles and timber circles?

<p>Circular elements in cave paintings (D)</p> Signup and view all the answers

What does the Egyptian Rhind papyrus give a method to find?

<p>The area of a circle (B)</p> Signup and view all the answers

Flashcards

Radius

The distance between any point on a circle and its center.

Circumference

The length of one complete circuit around the circle.

Chord

A straight line segment that connects two points on a circle.

Center

The point that is the same distance away from all points on a circle.

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Annulus

The area between two concentric circles (circles with the same center but different radii).

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Arc

Any connected part of a circle's curved line.

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Disc

The area enclosed within a circle.

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Radius

A straight line segment that connects the center of a circle to a point on the circle.

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Sector

An area bounded by two equal-length radii from the center of a circle and an arc connecting their endpoints.

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Secant

A straight line that intersects a circle at two points.

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Ring

The 'circle' word comes from this.

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A plane figure bounded by one curved line

Euclid's definition of a circle is this.

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Segment

The area enclosed by a chord and one of its corresponding arcs.

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Disc and Segment

These can be open (without their boundaries) or closed (including their boundaries).

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Stone circles and timber circles

Prehistoric people created these circular elements in art.

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The area of a circle

The Egyptian Rhind papyrus gives a method to find this.

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Study Notes

Circle Terminology

  • The distance between any point of the circle and the centre is called the radius.
  • The length of one circuit along the circle is called the circumference.
  • A line segment whose endpoints lie on the circle is called a chord.
  • The point equidistant from all points on the circle is called the centre or center.
  • A ring-shaped object, the region bounded by two concentric circles is called an annulus.
  • Any connected part of a circle is called an arc.

Circle Components

  • The region of the plane bounded by a circle is called a disk.
  • A line segment joining the center of a circle with any single point on the circle is called a radius.
  • A region bounded by two radii of equal length with a common center and either of the two possible arcs is called a sector.

Circle Properties

  • An extended chord, a coplanar straight line intersecting a circle in two points is called a secant.
  • The word 'circle' derives from the Greek word 'kirkos', meaning 'ring' or 'circle'.
  • Euclid's definition of a circle states that it is a set of points equidistant from a fixed point, called the center.
  • A region bounded by a chord and one of the arcs connecting the chord's endpoints is called a segment.
  • Intervals and arcs may be considered as open or closed, not containing their boundaries.
  • Prehistoric people made circular structures, including stone circles and timber circles.
  • The Egyptian Rhind papyrus gives a method to find the area of a circle.

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Description

Test your knowledge about circles, their properties, and their applications in mathematics and everyday life with this quiz. From the radius to practical uses like wheels and gears, explore the fundamentals of circles!

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