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- A circle is a closed, curved, two-dimensional shape that has the following characteristics1234:
- Every line through the centre forms a line of reflection symmetry, and it has rotational symmetry around the centre for every angle1.
- Its circumference and radius are proportional, and the diameter is the longest chord14.
- All circles are similar, and two circles are congruent if they have the same radius124.
- Equal chords are equidistant from the centre, and subtend equal angles at the centre24.
- The perpendicular bisector of a chord passes through the centre, and the radius drawn perpendicular to the chord bisects the chord24.
- A circle can circumscribe a rectangle, trapezium, triangle, square, or kite4.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.The circle is a highly symmetric shape: every line through the centre forms a line of reflection symmetry, and it has rotational symmetry around the centre for every angle. Its symmetry group is the orthogonal group O(2,R). The group of rotations alone is the circle group T. All circles are similar. A circle circumference and radius are proportional.
en.wikipedia.org/wiki/CircleHere is a list of properties of a circle: A circle is a closed 2D shape that has one curved face. Two circles can be called congruent if they have the same radius. Equal chords are always equidistant from the center of the circle. The perpendicular bisector of a chord passes through the center of the circle.www.cuemath.com/geometry/circles/A circle is a round-shaped figure that has no corners or edges. In geometry, a circle can be defined as a closed shape, two-dimensional shape, curved shape. A few things around us that are circular in shape are a car tire, a wall clock that tells time, and a lollipop.www.splashlearn.com/math-vocabulary/geometry/c…Some of the important properties of the circle are as follows:
- The circles are said to be congruent if they have equal radii
- The diameter of a circle is the longest chord of a circle
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