Read and download the CBSE Class 9 Mathematics Triangles Assignment Set B for the 2025-26 academic session. We have provided comprehensive Class 9 Mathematics school assignments that have important solved questions and answers for Chapter 7 Triangles. These resources have been carefuly prepared by expert teachers as per the latest NCERT, CBSE, and KVS syllabus guidelines.
Solved Assignment for Class 9 Mathematics Chapter 7 Triangles
Practicing these Class 9 Mathematics problems daily is must to improve your conceptual understanding and score better marks in school examinations. These printable assignments are a perfect assessment tool for Chapter 7 Triangles, covering both basic and advanced level questions to help you get more marks in exams.
Chapter 7 Triangles Class 9 Solved Questions and Answers
1 Given 'p' is the exterior angle of ΔPQR and 'q + r' is the sum of interior angles opposite to 'p: Which of the following is true?
(A) p + r = q
(B) p = q + r
(C) p + q = r
(D) r = q - p
Answer : B
2 Identify the interior opposite angles of the exterior angle ∠ACD of ΔABC.
(A) ∠B, ∠C
(B) ∠A, ∠C
(C) ∠A, ∠B
(D) ∠B, ∠D
Answer : C
3 A student is asked to draw a triangle whose angles are 90°, 90° and 20°. Which of the following is possible with the given measures?
(A) He can draw a right angled triangle.
(B) He can draw an equilateral triangle.
(C) He cannot draw any triangle.
(D) He can draw an obtuse angled triangle.
Answer : C
4 In the given figure, find the ratio ∠ABC : ACD.
(A) 1 : 1
(C) 1 : 2
(B) 2 : 1
(D) 3 : 1
Answer : B
5 In ΔABC, AD ⊥ BC and ∠B = ∠C By which property is ΔADB = ΔADC ?
(A) S.A.S. property
(B) S.S.S. property
(C) R.H.S. property
(D) A.S.A. property
Answer : D
6 An exterior angle of a triangle is 110° and one of the interior opposite angles is 30°.
Find the other two angles of the triangle.
(A) 80°, 70°
(B) 70°, 40°
(C) 110°, 40°
(D) 110°, 75°
Answer : A
7 One of the angles of a triangle is 75°. If the difference of the other two angles is 35°, what is the measure the largest angle of the triangle?
(A) 80°
(C) 100°
(B) 75°
(D) 100°
Answer : B
8 In the figure, if AB = CF, EF = BD and ∠AFE = ∠DBC, by which condition is ΔAFE congruent to ΔCBD ?
(A) S.A.S.
(B) S.S.S.
(C) A.S.A.
(D) R.H.S.
Answer : A
9 In the given figure, ΔABD = ΔACD, AB = AC, BD = CD.
By which criterion are the triangles congruent?
(A) S.S.S.
(B) R.H.S.
(C) S.A.S.
(D) A.S.A.
Answer : A
10 In the given figure, AD is the bisector of ∠A and AB = AC. By which crit erion are M BD and ΔACD congruent?
(i) s.s.s.
(ii) S.A.S.
(iii) A.S.A.
(iv) R.H.S
(A) (i) only.
(B) (ii), (iii) and (iv) only
(C) (i) and (iii)
(D) (ii) and (iv) only
Answer : B
11 In quadrilateral ACBD, AB is a diagonal. If AC = AD and AB bisects ∠A , by which congruence property is ΔACB ≅ ΔADB ?
(A) S.A.S.
(B) A.S.A.
(C) S.S.S.
(D) R.H.S .
Answer : A
12 In the given figure, ∠Q < ∠P and ∠R < ∠S . Which of the following is true?
(A) S.S.S.
(B) A.S.A.
(C) S.A.S.
(D) R.H.S.
Answer 12: A
Answer 13: A
14 In ΔABC, AB = AC and AD is perpendicular to BC. State the property by which ΔADB ≅ ΔADC.
(A) S.A.S. property
(B) S.S.S. property
(C) R.H.S. property
(D) A.S.A. property
Answer : C
15 ΔABC is an isosceles triangle with AB = AC. If AD ⊥ BC, which of the following is true?
(A) ∠B > ∠C
(B) ∠B = ∠C
(C) ∠B < ∠C
(D) ∠A= ∠B = ∠C
Answer : B
16 By which congruence property, are the two triangles in the figure congruent?
(A) 60°
(B) 120°
(C) 90°
(D) 110°
Answer 16: B
Answer 17: B
Answer 18: C
Q 1 In figure, OA = OB and OD = OC.
Q 2 ABC is a triangle in which altitudes BE and CF to sides AC and AB are equal. Show that
Q 3 AD and BC are equal perpendiculars to a line segment AB. Show that CD bisects AB
Q 4 Triangle ABC is an isosceles triangle; CD is bisector to the base AB. Prove that the altitude, the bisector and the median to the base of triangle ABC match
Click on link below to download CBSE Class 9 Mathematics Triangles Assignment Set B
| CBSE Class 9 Maths Coordinate Geometry Assignment Set A |
| CBSE Class 9 Maths Coordinate Geometry Assignment Set B |
| CBSE Class 9 Maths Coordinate Geometry Assignment Set C |
| CBSE Class 9 Mathematics Circle Assignment Set A |
| CBSE Class 9 Mathematics Circle Assignment Set B |
| CBSE Class 9 Mathematics Circle Assignment Set C |
| CBSE Class 9 Mathematics Collection of Assignments |
Free study material for Mathematics
CBSE Class 9 Mathematics Chapter 7 Triangles Assignment
Access the latest Chapter 7 Triangles assignments designed as per the current CBSE syllabus for Class 9. We have included all question types, including MCQs, short answer questions, and long-form problems relating to Chapter 7 Triangles. You can easily download these assignments in PDF format for free. Our expert teachers have carefully looked at previous year exam patterns and have made sure that these questions help you prepare properly for your upcoming school tests.
Benefits of solving Assignments for Chapter 7 Triangles
Practicing these Class 9 Mathematics assignments has many advantages for you:
- Better Exam Scores: Regular practice will help you to understand Chapter 7 Triangles properly and you will be able to answer exam questions correctly.
- Latest Exam Pattern: All questions are aligned as per the latest CBSE sample papers and marking schemes.
- Huge Variety of Questions: These Chapter 7 Triangles sets include Case Studies, objective questions, and various descriptive problems with answers.
- Time Management: Solving these Chapter 7 Triangles test papers daily will improve your speed and accuracy.
How to solve Mathematics Chapter 7 Triangles Assignments effectively?
- Read the Chapter First: Start with the NCERT book for Class 9 Mathematics before attempting the assignment.
- Self-Assessment: Try solving the Chapter 7 Triangles questions by yourself and then check the solutions provided by us.
- Use Supporting Material: Refer to our Revision Notes and Class 9 worksheets if you get stuck on any topic.
- Track Mistakes: Maintain a notebook for tricky concepts and revise them using our online MCQ tests.
Best Practices for Class 9 Mathematics Preparation
For the best results, solve one assignment for Chapter 7 Triangles on daily basis. Using a timer while practicing will further improve your problem-solving skills and prepare you for the actual CBSE exam.
You can download free PDF assignments for Class 9 Mathematics Chapter Chapter 7 Triangles from StudiesToday.com. These practice sheets have been updated for the 2025-26 session covering all concepts from latest NCERT textbook.
Yes, our teachers have given solutions for all questions in the Class 9 Mathematics Chapter Chapter 7 Triangles assignments. This will help you to understand step-by-step methodology to get full marks in school tests and exams.
Yes. These assignments are designed as per the latest CBSE syllabus for 2026. We have included huge variety of question formats such as MCQs, Case-study based questions and important diagram-based problems found in Chapter Chapter 7 Triangles.
Practicing topicw wise assignments will help Class 9 students understand every sub-topic of Chapter Chapter 7 Triangles. Daily practice will improve speed, accuracy and answering competency-based questions.
Yes, all printable assignments for Class 9 Mathematics Chapter Chapter 7 Triangles are available for free download in mobile-friendly PDF format.