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I'm Up and Down, and Round and Round Class 9

CBSE

Circles: chords, arcs, the angles they subtend and cyclic quadrilaterals.

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Topic-wise short notes with solved examples.Open PDFDownload
Every formula and result of the chapter on one sheet.Open PDFDownload
Daily practice problems with an answer key.Open PDFDownload

What this chapter covers

  • Definitions
  • Circles through given points
  • Chords and the angles they subtend at the centre
  • The perpendicular from the centre to a chord
  • Distance of chords from the centre
  • Angles subtended by an arc
  • Concyclic points and cyclic quadrilaterals

The short notes explain each of these topics with solved examples, the formula bank lists every result on one sheet, and the DPP sheet gives practice questions with an answer key.

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