Exercise 9.2 | Class 9 Circles | NCERT Maths | Infinix Classes | Faiz Sir

📘 Class 9 Maths Chapter 9 – Circles | Exercise 9.2 Full Solutions By Faiz Sir (Infinix Classes)
Is video me hum Circles ke bahut important theorems aur Exercise 9.2 ke selected questions ko detail me solve karenge.
Yeh video Class 9 students ke liye exam-oriented aur concept-boosting dono hi tarah se helpful hai.

🔹 Topics Covered in This Video:
✔️ Exercise 9.2 Questions Discussed

Q3. If two equal chords of a circle intersect within the circle, prove that the line joining the point of intersection to the centre makes equal angles with the chords.
Q4. If a line intersects two concentric circles at A, B, C, D → prove that AB = CD.
Q5. Three girls standing on a circular path – distance-based conceptual question (Very important for exams!).

🔹 What You Will Learn?

✔️ Equal chords theorem
✔️ Concentric circles property
✔️ Angle properties in a circle
✔️ Real-life application of circles (Case-type problem)
✔️ Step-by-step NCERT solutions
✔️ Exam-focused method explained by Faiz Sir

🔹 Perfect For:

👉 CBSE Class 9 Students
👉 Term-2 Exam preparation
👉 NCERT Chapter 9 Full Concept Learning
👉 School Exams | Class Tests | Board Foundation Preparation

🔹 About the Channel:

📚 Infinix Classes — Best Maths learning platform for Class 9 & 10
👨‍🏫 Faiz Sir (M.Sc. Maths with CS) teaches concept clarity with exam-oriented approach.



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3. If two equal chords of a circle intersect within the circle, prove that the line joining the point of intersection to the centre makes equal angles with the chords.
यदि किसी वृत्त की दो बराबर जीवाएँ वृत्त के भीतर प्रतिच्छेद करती हैं, तो सिद्ध कीजिए कि प्रतिच्छेद बिंदु को केंद्र से मिलाने वाली रेखा जीवाओं के साथ समान कोण बनाती है।


4. If a line intersects two concentric circles (circles with the same centre) with centre O at A, B, C and D, prove that AB = CD (see Fig.).
यदि एक रेखा O केंद्र वाले दो संकेन्द्रीय वृत्तों (एक ही केंद्र वाले वृत्त) को A, B, C और D पर प्रतिच्छेद करती है, तो सिद्ध कीजिए कि AB = CD (चित्र देखें)।

5. Three girls Reshma, Salma and Mandip are playing a game by standing on a circle of radius 5m drawn in a park. Reshma throws a ball to Salma, Salma to Mandip, Mandip to Reshma. If the distance between Reshma and Salma and between Salma and Mandip is 6m each, what is the distance between Reshma and Mandip?
तीन लड़कियाँ रेशमा, सलमा और मंदीप एक पार्क में खींचे गए 5 मीटर त्रिज्या वाले वृत्त पर खड़ी होकर कोई खेल खेल रही हैं। रेशमा सलमा की ओर गेंद फेंकती है, सलमा मंदीप की ओर, और मंदीप रेशमा की ओर। यदि रेशमा और सलमा के बीच तथा सलमा और मंदीप के बीच की दूरी 6-6 मीटर है, तो रेशमा और मंदीप के बीच की दूरी क्या है?