Circle — Class 9 Maharashtra SSC Mathematics revision notes
A 4-page visual revision sheet for Circle, written for Class 9 Maharashtra SSC Mathematics. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
What this Circle sheet covers
- Chord
- Arc
- Segment
- Sector
- The parts of a circle
- Perpendicular from the centre to a chord
- Equal chords
- The chord theorems
- Why the perpendicular bisects the chord
- The lengths this chapter computes
- half chord, radius and distance from centre
- so the chord length from r and d
- and the distance from centre from r and c
- circumference of the whole circle
- area of the whole circle
- Chord length from the radius
- Circle through three points
- Circumcircle
- Concyclic points
- The circle through given points
- Arcs and the angles they subtend
- Segment against sector, and minor against major
- Terms in this chapter
- Traps that cost marks
- Tricks that save time
How CapCompass uses this sheet
These notes are not a standalone PDF. CapCompass plans Mathematics chapter by chapter against your real exam dates and free hours, and when the plan reaches Circle the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.