•Definition of circle and related concepts-radius, circumference,
diameter, chord, arc, secant, sector, segment, subtended angle.
Answers
Answer:
A circle is a shape consisting of all points in a plane that are a given distance from a given point, the centre; equivalently it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant.
Area: π× (radius)²
Circumference: 2π x radius
Diameter: 2 x radius
Number of vertices: 0
Number of edges: 0
chord : A chord of a circle is a straight line segment whose endpoints both lie on the circle. A secant line, or just secant, is the infinite line extension of a chord. More generally, a chord is a line segment joining two points on any curve, for instance, an ellipse.
Diameter : It is the longest chord of a circle passing through the centre
arc : Arc of a Circle. A connected section of the circumference of a circle. Arcs are measured in two ways: as the measure of the central angle, or as the length of the arc itself
secant : a secant of a curve is a line that intersects the curve in at least two (distinct) points. ... In the case of a circle, a secant will intersect the circle in exactly two points and a chord is the line segment determined by these two points, that is the interval on a secant whose endpoints are these points.
sector : A circular sector or circle sector, is the portion of a disk enclosed by two radii and an arc, where the smaller area is known as the minor sector and the larger being the major sector. In the diagram , the radius of the circle, and is the arc length of the minor sector
segment : The segment of a circle is the region bounded by a chord and the arc subtended by the chord. ... The segment is the small partially curved figure left when the triangular portion of the sector is removed.
subtended angle : an angle subtended by an arc, line segment, or any other section of a curve is one whose two rays pass through the endpoints of the arc (or other object). ... For example, one may speak of the angle subtended by an arc of a circle when the angle's vertex is the centre of the circle.
Maths or Geometry, a circle is a special kind of ellipse in which the eccentricity is zero and the two foci are coincident. A circle is also termed as the locus of the points drawn at an equidistant from the centre. The distance from the centre of the circle to the outer line is its radius. Diameter is the line which divides the circle into two equal parts and is also equal to twice of the radius.
A circle is a basic 2D shape which is measured in terms of its radius. The circles divide the plane into two