Circles
Class 9 · Mathematics · 6 lessons
Introduction to Circles
Introduction to circle and its parts.
Exercise 12.1 — Circle Basics
Simple problems based on circle and its parts.
Exercise 12.2 — Chord and Angle
Angle subtended by a chord at a point on the circle.
Exercise 12.3 — Perpendiculars from Centre
Perpendiculars from centre to a chord and three points describing a circle.
Exercise 12.4 — Arc and Angle
Angle subtended by an arc of a circle.
Exercise 12.5 — Cyclic Quadrilaterals
Cyclic quadrilaterals and their properties.