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Revision Notes

Circle

Maharashtra Board · Class 9 · Mathematics

Quick revision notes for Circle — Maharashtra Board Class 9 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

44 questions22 flashcards5 concepts

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Key Topics to Revise

1

Basic Concepts of Circle

  • A circle is the set of all points in a plane that are equidistant from a fixed point called the center
  • The fixed distance from center to any point on the circle is called radius
  • A chord is a line segment joining any two points on the circle
2

Properties of Chords

  • The perpendicular from the center of a circle to a chord bisects the chord
  • Congruent chords of a circle are equidistant from the center
  • Chords equidistant from the center are congruent
3

Incircle of a Triangle

  • The incircle touches all three sides of the triangle from inside
  • The center of the incircle is called the incenter
  • The incenter is the point of concurrency of angle bisectors
4

Circumcircle of a Triangle

  • The circumcircle passes through all three vertices of the triangle
  • The center of the circumcircle is called the circumcenter
  • The circumcenter is the point of concurrency of perpendicular bisectors of sides

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Full Notes

Key Concepts

A circle is the setThe line segment joining the centerTwo important theoremsThe incircle is a circleThe circumcircle passes through all three

Frequently Asked Questions

What are the important topics in Circle for Maharashtra Board Class 9 Mathematics?
Circle covers several key topics that are frequently asked in Maharashtra Board 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 — Maharashtra Board Class 9 Mathematics?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision 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 16 chapters — Maharashtra Board Class 9 Mathematics Revision Notes

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