Official CBSE Assignments for Class 9 Mathematics
Review targeted academic assignments with the CBSE Class 9 Mathematics Triangles Assignment Set 02. Built according to official CBSE standards for the 2026-27 term, these downloadable Class 9 Mathematics worksheets support effective daily practice for Chapter 7 Triangles.
Solved Practice Assignments for Mathematics
Access the complete assignment PDF for Class 9 Mathematics below. Regular practice with these targeted academic tasks builds familiarity with standard question patterns and helps secure higher marks in final school evaluations.
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
Free study material for Mathematics
CBSE Class 9 Mathematics Assignments for Chapter 7 Triangles
Chapter Practice Questions for Class 9 Mathematics
Review targeted chapter assignments for Class 9 Mathematics Chapter 7 Triangles. Built according to official CBSE guidelines, these downloadable problem sets help students build accuracy and prepare effectively for school tests.
Key Advantages of Solving Chapter 7 Triangles Assignments
- Exam Alignment: Questions strictly follow contemporary CBSE sample papers and grading schemes.
- Comprehensive Coverage: Features objective drills, case studies, and structured descriptive problems for Chapter 7 Triangles.
- Pacing & Precision: Regular problem-solving builds critical calculation speed and test-taking accuracy.
How to Approach Mathematics Chapter 7 Triangles Assignments
- Textbook Review: Always study the core NCERT book for Class 9 Mathematics prior to beginning the assignment.
- Independent Attempt: Solve Chapter 7 Triangles questions on your own initially before cross-checking with expert solutions.
- Error Tracking: Record challenging concepts in a dedicated notebook and practice online MCQ tests for revision.
FAQs
You can download free PDF assignments for Class 9 Mathematics Chapter 7 Triangles from StudiesToday.com. These practice sheets have been updated for the 2026-27 session covering all concepts from latest NCERT textbook.
Yes, our teachers have given solutions for all questions in the Class 9 Mathematics 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 7 Triangles.
Practicing topicw wise assignments will help Class 9 students understand every sub-topic of Chapter 7 Triangles. Daily practice will improve speed, accuracy and answering competency-based questions.
Yes, all printable assignments for Class 9 Mathematics Chapter 7 Triangles are available for free download in mobile-friendly PDF format.