Class 9 Mathematics — Chapter 8: Quadrilaterals
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 9 Mathematics, Chapter 8 (Quadrilaterals). 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
The sum of interior angles of a quadrilateral is:
The sum of all interior angles of a quadrilateral is 360°.
Angles of a quadrilateral are in ratio 1:2:3:4. Find the largest angle.
x+2x+3x+4x=360°→10x=360→x=36°. Largest=4×36=144°.
In parallelogram ABCD, E is midpoint of AB and F is midpoint of CD. EF divides ABCD into two parallelograms. Their areas are:
EF is parallel to AD and BC (both equal half of AB). Both parts are parallelograms on equal bases between same parallels → equal areas.
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