
06. Lines and Angles
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Description:
Strengthen your understanding of Chapter 6: Lines and Angles with this well-structured NCERT Solutions PDF, aligned with the latest CBSE Class 9 Mathematics syllabus (2025–26). It provides accurate, step-by-step answers to all textbook questions, helping students master properties of lines, angles, and their relationships through clear explanations and diagrams.
Ideal for Class 9 CBSE students, teachers, and parents for revision, homework help, and concept reinforcement.
What’s Inside This PDF?
✅ Complete solutions to all NCERT in-text and end-of-chapter questions
✅ Clear explanations of angle pairs, parallel line properties, and triangle angle sum property
✅ Step-by-step proofs with well-labeled diagrams
✅ Answers prepared as per CBSE’s latest marking scheme
✅ Based entirely on the official NCERT Class 9 Maths Chapter 6 textbook
Why Use This NCERT Solution?
✅ Clarity-Focused: Explains angle properties and theorems in simple steps
✅ Exam-Ready Language: Solutions follow CBSE board-approved style
✅ Time-Saving: Perfect for quick homework reference and revisions
✅ CBSE 2025–26 Compliant: Fully updated and syllabus-accurate
Frequently Asked Questions (FAQs)
180°.
Angles opposite each other when two lines intersect, and they are equal.
The sum of the three angles of a triangle is 180°.
They are equal.
180° − 65° = 115°.