Mathematics
Chord
जीवा
In Class 9 Mathematics, this topic introduces the chord of a circle—a line segment joining any two points on its circumference. Students learn to identify and draw chords, distinguish them from the radius, diameter, arc, and secant, and understand how a diameter is the longest chord. The topic also develops understanding of chords through diagrams and circle-based reasoning, helping students apply the concept while studying the properties of circles.