The equation of the circle which touches x-axis and whose c…

Maths Circle and System of Circles Equations of Circle, Geometrical Problems Regarding Circle, Centre of The Circle, Radius of The Circle Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

The equation of the circle which touches x-axis and whose centre is (1, 2), is -

x 2 + y 2 – 2x + 4y + 1 = 0

x 2 + y 2 – 2x – 4y + 1 = 0

x 2 + y 2 + 2x + 4y + 1 = 0

x 2 + y 2 + 4x + 2y + 4 = 0

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The correct answer is:

Centre (1, 2) ; radius = 2

equation of circle (x – 1) 2 +(y – 2) 2 = (2) 2

x 2 +y 2 –2x – 4y + 1 = 0

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