Class 9 Math: Triangles Important Exam Questions
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 Triangles to help you test your mastery.
Exam-Pattern Questions and Answers
Question 1 (EASY)
- Option 1: BC= PQ
- Option 2: AC = PR
- Option 3: QR= BC
- Option 4: AB = PQ
Solution Explanation & Steps: (a) BC = PQ Given, ΔABC ≅ ΔPQR Thus, the corresponding sides are equal Hence, AB = PQ, BC = QR and AC = PR Therefore, BC = PQ is not true for the triangles.
Question 2 (HARD)
This is a descriptive problem. Work out all steps on paper before checking the solution.
Solution Explanation & Steps: Statement - 1 mark Given, To prove, Construction and figure of 2 marks Proof of 2 marks SECTION - E(Case Study Based Questions) Questions 36 to 38 carry 4 marks each.
Question 3 (EASY)
- Option 1: 7/8
- Option 2: 6/7
- Option 3: 7/6
- Option 4: 8/7
Solution Explanation & Steps: (b) 6/7 The ratio of the corresponding sides of similar triangles is same as the ratio of their perimeter ∴ ∆ABC ~ ∆PQR or ∆PQR ~ ∆ABC 48 6 56 7 PQ QR PR PQ AB BC AC AB⇒ = = = ⇒ =
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.