Chapter 10 • Class 9 Mathematics
Circles
Study by topic — one focused page each
1
Definitions and Basic Terms Related to Circles
What is a Circle? A circle is a collection of all points in a flat plane that are at a constant, fixed distance from a fixed point in that same plane.…
Start this topic → 2Chords, Perpendiculars, and Angles Subtended
What are the Theorems Governing Chords and Perpendiculars? When you draw a chord inside a circle and connect its endpoints to either the center or the…
Start this topic → 3Circles Through Three Points and Cyclic Quadrilaterals
What are the Laws for Three Points and Cyclic Quadrilaterals? Now we look at how circles interact with multiple points and multi-sided shapes like qua…
Start this topic →Chapter-wide tests
Online Test
10 MCQ • 15 min
IMO / Olympiad Practice
Olympiad level • 15 min
📝 Full Chapter Test (Download & Print)
35 marks • 75 min • with answer key