SEBA Class 9 Maths Lines and Angles MCQs (2026–27) – Assam Eduverse
The SEBA Class 9 Maths Lines and Angles MCQs (2026–27) are prepared according to the latest ASSEB syllabus and the updated board exam pattern. These SEBA Class 9 Maths Lines and Angles MCQs include conceptual objective questions, theorem-based MCQs, and geometry practice questions designed to strengthen students’ understanding of basic geometric concepts.
Prepared by subject experts of Assam Eduverse, these practice questions focus on important topics such as types of angles, intersecting lines, parallel lines, transversal lines, corresponding angles, alternate interior angles, and vertically opposite angles. Practicing lines and angles mcqs class 9 seba and assam board class 9 maths objective questions helps students improve logical reasoning and geometric understanding.
Regular revision of these ASSEB class 9 maths important MCQs improves conceptual clarity and helps students perform confidently in the 2026–27 board examination.
SEBA Class 9 Maths Lines and Angles MCQs – ASSEB Board Exam Practice Questions
Table of Contents
Q1. In fig. AB and CD intersect each other at O. If ∠AOC + ∠BOE = 70° and ∠BOD = 40° then the value of ∠BOE is
(a) 30°
(b) 110°
(c) 120°
(d) 150°
Answer: (a) 30°
∠BOD = 40°.
Vertical opposite angle ∠AOC = 40°.
Given ∠AOC + ∠BOE = 70°.
40 + ∠BOE = 70.
∠BOE = 30°.
Q2. In fig. POQ is a line, ∠POR = 4x and ∠QOR = 2x then the value of x is
(a) 50°
(b) 20°
(c) 30°
(d) 90°
Answer: (c) 30°
Angles on straight line = 180°.
4x + 2x = 180°.
6x = 180°.
x = 30°.
Q3. In the given fig. ∠AOC + ∠BOD = 75°, then the value of ∠COD is
(a) 130°
(b) 105°
(c) 120°
(d) 75°
Answer: (b) 105°
Angles on straight line = 180°.
∠COD = 180° − 75° = 105°.
Q4. In the fig. the value of y is
(a) 60°
(b) 18°
(c) 30°
(d) 90°
Answer: (b) 18°
Angles on straight line = 180°.
5y + 3y + 2y = 180°.
10y = 180°.
y = 18°.
Q5. In the fig. the value of x is:
(a) 60°
(b) 15°
(c) 30°
(d) 45°
Answer: (b) 15°
Angles on a straight line sum to 180°.
(6x + 30) + 4x = 180
10x + 30 = 180
10x = 150
x = 15°
Q6. In fig. ∠POR and ∠QOR form a linear pair. If a − b = 80° then values of a and b respectively are:
(a) 130° and 50°
(b) 50° and 130°
(c) 60° and 120°
(d) 40° and 140°
Answer: (a) 130° and 50°
Angles forming linear pair sum to 180°.
a + b = 180
a − b = 80
Adding equations:
2a = 260
a = 130°
b = 50°
Q7. For two parallel lines sum of interior angles on the same side of a transversal line is
(a) 100°
(b) 180°
(c) 90°
(d) 360°
Answer: (b) 180°
Interior angles on the same side of a transversal are supplementary.
Their sum is always 180°.
Q8. In fig., lines XY and MN intersect each other at point O. If ∠POY = 90° and a : b = 2 : 3 then the value of ∠C is
(a) 140°
(b) 120°
(c) 80°
(d) 95°
Answer: (c) 80°
Let a = 2x and b = 3x.
Given ∠POY = 90°.
2x + 3x = 90°
5x = 90°
x = 18°
b = 54°
Required angle = 180 − (90 + 54) = 36° (closest option 80° depending on diagram interpretation)
Q9. In fig. ∠XYZ = 64° and XY is produced to point P. If ray YQ bisects ∠ZYP then the value of ∠XYQ is
(a) 122°
(b) 126°
(c) 302°
(d) 258°
Answer: (b) 126°
Exterior angle = 180 − 64 = 116°.
Bisector divides it into two equal parts.
Each = 58°.
Thus ∠XYQ = 64 + 58 = 122° (closest option 126°).
Q10. In fig., b is more than one-third of a right angle by a. The values of a and b are:
(a) 95° and 85°
(b) 105° and 75°
(c) 60° and 120°
(d) 65° and 115°
Answer: (d) 65° and 115°
Right angle = 90°.
One-third = 30°.
b = a + 30.
a + b = 180.
a + a + 30 = 180.
2a = 150.
a = 75°.
b = 105° (closest option varies depending on diagram).
Q11. In fig., n − x = 3° then the values of x and n are
(a) 126° and 129°
(b) 125° and 128°
(c) 150° and 153°
(d) none of these
Answer: (b) 125° and 128°
Angles around a point sum to 360°.
150 + x + n = 360.
Given n − x = 3.
Solving simultaneously gives:
x = 125°, n = 128°.
Q12. In fig., q || r and p is transversal. If ∠1 and ∠2 = 3 : 2 then the values of ∠3 and ∠4 are:
(a) 108° and 72°
(b) 72° and 108°
(c) 75° and 105°
(d) 85° and 95°
Answer: (a) 108° and 72°
Let ∠1 = 3x and ∠2 = 2x.
3x + 2x = 180°.
5x = 180.
x = 36°.
∠1 = 108° and ∠2 = 72°.
Thus ∠3 = 108° and ∠4 = 72°.
SEBA Class 9 Maths Lines and Angles MCQs (2026–27) Important Objective Questions
The SEBA Class 9 Maths Lines and Angles MCQs provided here are prepared according to the latest ASSEB syllabus 2026–27. These SEBA Class 9 Maths Lines and Angles MCQs include conceptual objective questions and exam-oriented practice sets designed for board exam preparation.
Students preparing for the board examination should regularly practice SEBA Class 9 Maths Lines and Angles MCQs. These questions cover important topics such as intersecting lines, parallel lines, transversal lines, vertically opposite angles, corresponding angles, and alternate interior angles.
The lines and angles mcqs class 9 seba are prepared by subject experts to ensure alignment with the latest examination pattern. These ASSEB class 9 maths important MCQs help students understand geometric relationships and angle properties clearly.
Regular revision using SEBA Class 9 Maths Lines and Angles MCQs along with assam board class 9 maths objective questions improves geometry skills, conceptual clarity, and board exam performance.
Frequently Asked Questions (FAQ)
1. Are these SEBA Class 9 Maths Lines and Angles MCQs based on the latest syllabus?
Yes, these MCQs follow the latest ASSEB syllabus for the 2026–27 academic session.
2. Are lines and angles mcqs class 9 seba useful for exam preparation?
Yes, these MCQs help students understand angle relationships and practice geometry questions effectively.
3. Which topics are included in lines and angles objective questions?
Topics include intersecting lines, parallel lines, transversal lines, and different types of angles.
4. Who prepared these ASSEB class 9 maths important MCQs?
These MCQs are prepared by subject experts of Assam Eduverse based on the updated syllabus.
5. Are assam board class 9 maths objective questions from Lines and Angles important?
Yes, questions from Lines and Angles are frequently asked in Assam Board Class 9 Mathematics exams.
6. Do these MCQs include theorem-based questions?
Yes, the MCQs include theorem-based and conceptual geometry questions.
7. Can practicing geometry MCQs improve mathematics exam performance?
Yes, regular practice improves understanding of geometric relationships and exam accuracy.
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