Class 9 Math: Lines and Angles Important Exam Questions
NexPro Tools Mathematics TeamJune 5, 20266 min read
Preparing for school exams or final CBSE boards requires practicing questions patterned after official grading schemes. We have compiled a list of crucial questions for Class 9 Lines and Angles to help you test your mastery.
Exam-Pattern Questions and Answers
Question 1 (EASY)
If two complementary angles are in the ratio 13 : 5, then the angles are
- Option 1: 65°, 35°
- Option 2: 65°, 25°
- Option 3: 13x°, 5x°
- Option 4: 60°, 30°
Solution Explanation & Steps: (b) 65°, 25°
Question 2 (EASY)
Angles of a triangle are in the ratio 2 : 4 : 3. The smallest angle of the triangle is
- Option 1: 60°
- Option 2: 40°
- Option 3: 80°
- Option 4: 20°
Solution Explanation & Steps: (b) 40°
Question 3 (EASY)
Which of the following is not a criterion for congruence of triangles?
- Option 1: SAS
- Option 2: ASA
- Option 3: SSA
- Option 4: SSS
Solution Explanation & Steps: (c) SSA
Grading Step-Marking Guidelines
Remember that teachers award partial marks for writing down formulas, stating the given variables, and drawing diagrams. Never leave a question blank on an exam. Write down the relevant formulas and initial substitution steps to secure partial credits.
📚 Class 9 Math Resource Hub for Lines and Angles:
• 🧮 Interactive Solver: Solve Lines and Angles Problems - Verify steps in real-time.
• 📝 Timed Practice Quiz: Take Lines and Angles Online Quiz - Test your speed and concepts.
• 📄 Printable Worksheet: Download Lines and Angles PDF Worksheet - Interactive problems with answers.
• 📐 Formula Sheet: View Lines and Angles Key Equations - Complete revision references.
• 🔄 Next Topic Guide: Triangles Study Notes
• 🎓 Syllabus Overview: Class 9 Mathematics Portal - Access all chapter guides.