Skip to main content
Super TutorResources
Chapter 17 of 28
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Syllabus

Circle

ICSE · Class 9 · Mathematics

Complete topic list for Circle in ICSE Class 9 Mathematics. Key concepts, sub-topics, and what to focus on for board exams.

37 questions24 flashcards5 concepts

Interactive on Super Tutor

Studying Circle? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for syllabus and more.

Try Super Tutor — Free

1,000+ Class 9 students started this chapter today

A labeled diagram illustrating the fundamental components of a circle, including the center, radius, diameter, chord, and circumference.
Super Tutor

Learn better with visuals Super Tutor has hundreds of illustrations like this across every chapter — all free to try.

Get started
4 Topics · ICSE Class 9 Mathematics

Topics in Circle

1

1. Basic Ideas of a Circle

  • A circle is the figure formed by all points in a plane that are at the same fixed distance from a fixed point.
  • The fixed point is called the centre.
  • The fixed distance is called the radius.
2

2. Position of Points and Types of Circles

  • A point is exterior if its distance from the centre is greater than the radius.
  • A point is interior if its distance from the centre is less than the radius.
  • A point lies on the circumference if its distance from the centre is equal to the radius.
3

3. Arc, Segment and Sector

  • An arc is a part of the circumference.
  • If two arcs are unequal, the smaller arc is the minor arc and the bigger one is the major arc.
  • A minor arc is always smaller than a semicircle.
4

4. Chord Theorems and Distance from the Centre

  • A straight line drawn from the centre to bisect a chord that is not a diameter is perpendicular to the chord.
  • The perpendicular from the centre to a chord bisects the chord.
  • Greater is the size of a chord, smaller is its distance from the centre, and vice-versa.

Key Concepts

Central concept: Circle and its parts

Definition of a circleCentreRadiusCircumferenceChordDiameterArcSegment

Frequently Asked Questions

What are the important topics in Circle for ICSE Class 9 Mathematics?
Circle covers several key topics that are frequently asked in ICSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Circle — ICSE Class 9 Mathematics?
Understand the core concepts first, then work through the 37 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Circle

All 28 chapters — ICSE Class 9 Mathematics Syllabus

For serious students

Get the full Circle chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 9 Mathematics.

Try Super Tutor Free
Try the full chapter — Free