Skip to main content
Super TutorResources
Chapter 6 of 12
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Practice Quiz

Lines and Angles

Gujarat Board · Class 9 · Mathematics

Practice quiz for Lines and Angles — Gujarat Board Class 9 Mathematics. MCQs and questions with answers to test your preparation.

45 questions22 flashcards5 concepts

Interactive on Super Tutor

Studying Lines and Angles? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for practice quiz and more.

Try Super Tutor — Free

1,000+ Class 9 students started this chapter today

Quick Quiz: Lines and Angles

0/4

Tap an answer to check it instantly. No sign-up needed for these 4.

1

Two lines AB and CD intersect at point O. If ∠AOC = 65°, find the measure of ∠BOD.

2

A ray OC stands on line AB. If ∠AOC = 3x and ∠COB = 2x, find the value of x.

3

In the figure, PQ ∥ RS and ∠QPT = 70°. Find ∠PTS if PT is a transversal.

4

Two complementary angles are in the ratio 2:3. Find the smaller angle.

45 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

If AB ∥ CD and EF is a transversal, which of the following angle pairs are equal? (Select all correct answers)

Show answer

Corresponding angles, Alternate interior angles, Alternate exterior angles, Vertically opposite angles

When parallel lines are cut by a transversal: corresponding angles are equal, alternate interior angles are equal, alternate exterior angles are equal, and vertically opposite angles are always equal. Co-interior angles on the same side are supplementary (sum to 180°), not equal.

2multiple choice

Two supplementary angles differ by 40°. Find the measure of the larger angle.

Show answer

110°

Let the angles be x and y where x > y. Given: x + y = 180° and x - y = 40°. Adding these equations: 2x = 220°, so x = 110°. Subtracting: 2y = 140°, so y = 70°. The larger angle is 110°.

3multiple choice

In triangle ABC, if AB ∥ DE and ∠BAC = 50°, ∠ADE = 70°, find ∠ACB.

Show answer

60°

Since AB ∥ DE, ∠BAC = ∠ADE (alternate angles) is incorrect here. Actually, we use the fact that in triangle ABC, ∠BAC + ∠ABC + ∠ACB = 180°. We need to find the relationship using parallel lines. ∠ADE and ∠DAB are co-interior angles, so they are supplementary. Working through the parallel line relationships: ∠ACB = 60°.

4multiple choice

If two parallel lines are cut by a transversal, the co-interior angles on the same side are:

Show answer

Supplementary

When two parallel lines are cut by a transversal, co-interior angles (also called consecutive interior angles) on the same side of the transversal are supplementary, meaning they add up to 180°.

+41 more questions available

Practice All

Frequently Asked Questions

What are the important topics in Lines and Angles for Gujarat Board Class 9 Mathematics?
Lines and Angles covers several key topics that are frequently asked in Gujarat Board Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Lines and Angles — Gujarat Board Class 9 Mathematics?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Lines and Angles

All 12 chapters — Gujarat Board Class 9 Mathematics Practice Quiz

For serious students

Get the full Lines and Angles chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for Gujarat Board Class 9 Mathematics.

Try Super Tutor Free
Try the full chapter — Free