Class 9 Mathematics — Chapter 6: Lines and Angles
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 9 Mathematics, Chapter 6 (Lines and Angles). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 90.
Sample questions
A linear pair of angles always sums to:
A linear pair consists of two adjacent angles forming a straight line, so they sum to 180°.
Two lines intersect and one angle is 70°. Find all four angles.
Vertically opposite angles are equal: 70°. Adjacent angles form linear pair: 180°−70°=110°.
AB ∥ CD. A transversal cuts them. If one alternate interior angle is (3x−10)° and the other is (2x+15)°, find x.
Alternate interior angles are equal: 3x−10=2x+15→x=25.
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