define the definition of circular region, radius, chord, diameter, secant, tangent , semicircle semicircular region, circumference ,angle subtended by an Arc, segment of a circle, sector of a circle ,quadrant?
Answers
Answer:
Arc: any connected part of the circle.
Centre: the point equidistant from the points on the circle.
Chord: a line segment whose endpoints lie on the circle.
Circumference: the length of one circuit along the circle, or the distance around the circle.
Diameter: a line segment whose endpoints lie on the circle and which passes through the centre; or the length of such a line segment, which is the largest distance between any two points on the circle. It is a special case of a chord, namely the longest chord, and it is twice the radius.
Disc: the region of the plane bounded by a circle.
Lens: the intersection of two discs.
Passant: a coplanar straight line that does not touch the circle.
Radius: a line segment joining the centre of the circle to any point on the circle itself; or the length of such a segment, which is half a diameter.
Sector: a region bounded by two radii and an arc lying between the radii.
Segment: a region, not containing the centre, bounded by a chord and an arc lying between the chord's endpoints.
Secant: an extended chord, a coplanar straight line cutting the circle at two points.
Semicircle: an arc that extends from one of a diameter's endpoints to the other. In non-technical common usage it may mean the diameter, arc, and its interior, a two dimensional region, that is technically called a half-disc. A half-disc is a special case of a segment, namely the largest one.
Tangent: a coplanar straight line that touches the circle at a single point.
Chord, secant, tangent, radius, and diameter
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