N number of circles are formed with a common centre, what is that geometry called?(a) Inscribed circle(b) Sphere(c) Circumscribed circle(d) Concentric circleI had been asked this question in semester exam.I'd like to ask this question from Geometrical Construction topic in division Lettering Practice, Scales & Curves of Civil Engineering Drawing

N number of circles are formed with a common centre, what is that geom

1.	N number of circles are formed with a common centre, what is that geometry called?(a) Inscribed circle(b) Sphere(c) Circumscribed circle(d) Concentric circleI had been asked this question in semester exam.I'd like to ask this question from Geometrical Construction topic in division Lettering Practice, Scales & Curves of Civil Engineering Drawing
Answer» Correct choice is (d) Concentric circle The explanation: Two or more circles with same centre and different RADII, are TERMED as concentric circle. Inscribed circle is the largest possible circle drawn inside a polygon, each side of the polygon must be tangent to the circle, while a circle CONTAINING a polygon in its interior touching all VERTICES of a plane figure is called circumscribed circle.

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