NCERT Solutions for Class 10 Maths Chapter 10: Circles

NCERT Solutions for Class 10 Maths Chapter 10 Circles deals with Circle and its various properties. In geometry, a circle is a perfectly round shape—meaning any point around its curve is the same distance from its central point. A circle consists of a closed curved line around a central point. Every point on the line is the same distance from the central point. This distance to the center is called the radius.

Class 10 Maths Chapter 10 Circles belongs to Unit 4 Geometry which has a weightage of 15 marks in the CBSE Class 10 Maths Examination. The questions related to tangent circle  formula and semicircle are often asked in the Class 10 Examination.

Download PDF: NCERT Solutions for Class 10 Maths Chapter 10 Circles 


NCERT Solutions for Class 10 Maths Chapter 10

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Important Topics in Class 10 Maths Chapter 10

  • A circle is a geometric figure that is measured in terms of its radius.

A circle and a line on a plane can have 3 possibilities – 

  1. they can be non-intersecting
  2. they can have a single common point.
  3. they can have two common points.
  • Tangent: A tangent to a circle is a line that touches a circle at exactly one point.

For each point on a circle, there is a unique tangent that passes through it.
  • Secant: A secant is a line that has 2 common points with the circle.
Secant cuts the circle at exactly two points, forming a chord.
  • Tangent perpendicular to the radius at the point of contact.
The theorem states that “the tangent to a circle at any given point is the perpendicular to the radius of the circle which passes through the point of contact”
  • When a tangency point lies on a circle, exactly one tangent to a circle exists that passes through it.

The length of the tangents drawn from an external point to a circle are equal.


NCERT Solutions For Class 10 Maths Chapter 10 Exercises:

The detailed solutions for all the NCERT Solutions for Circles under different exercises are as follows:


Circles – Related Topics:

CBSE Class 10 Mathematics Study Guides:

CBSE X Related Questions

  • 1.
    If the quadratic equation \(9x^2 + 8kx + 16 = 0\) has real and equal roots, then the value of k is

      • 3
      • –3
      • –4
      • \(\pm 3\)

    • 2.
      There are two sections A and B of Grade X. There are 28 students in Section A and 30 students in Section B. What is the minimum number of books you will acquire for the class library so that they can be distributed equally among students of Section A or Section B ?

        • 144
        • 2
        • 420
        • 272

      • 3.
        \(ABCD\) is a parallelogram such that \(AF = 7 \text{ cm}\), \(FB = 3 \text{ cm}\) and \(EF = 4 \text{ cm}\), length \(FD\) equals

          • \(\frac{21}{4} \text{ cm}\)
          • \(\frac{28}{3} \text{ cm}\)
          • \(\frac{12}{7} \text{ cm}\)
          • \(5.5 \text{ cm}\)

        • 4.
          If \( \alpha, \beta \) are the zeroes of the quadratic polynomial \( px^2 + qx + r \), then find the value of \( \alpha^3\beta + \beta^3\alpha \).


            • 5.
              D is the mid-point of side BC of \(\triangle ABC\). CE and BF intersect at O, a point on AD. AD is produced to G such that \(OD = DG\). Prove that OBGC is a parallelogram.


                • 6.
                  If \(PQ\) and \(PR\) are tangents to the circle with centre \(O\) and radius \(4 \text{ cm}\) such that \(\angle QPR = 90^{\circ}\), then the length \(OP\) is

                    • \(4 \text{ cm}\)
                    • \(4\sqrt{2} \text{ cm}\)
                    • \(8 \text{ cm}\)
                    • \(2\sqrt{2} \text{ cm}\)

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