Class 9 ch 8 maths

NCERT Solutions for Class 9 Maths Chapter 8 Quadrilaterals Ex 8.2 The topics and sub-topics in Class 9 Maths Chapter 8 Quadrilaterals: • Quadrilaterals • Introduction • Angle Sum Property Of A Quadrilateral • Types Of Quadrilaterals • Properties Of A Parallelogram • Another Condition For A Quadrilateral To Be A Parallelogram • The MidPoint Theorem • Summary • NCERT Solutions for Class 9 Maths Chapter 8 Quadrilaterals Ex 8.2 More Resources for CBSE Class 9 • • • • • • • • • NCERT Solutions for Class 9 Maths Chapter 8 Quadrilaterals (चतुर्भुज) (Hindi Medium) Ex 8.2

Extra Questions for Class 9 Maths Quadrilaterals with Answers Solutions Extra Questions for Class 9 Maths Chapter 8 Quadrilaterals with Solutions Answers Quadrilaterals Class 9 Extra Questions Very Short Answer Type Question 1. If one angle of a parallelogram is twice of its adjacent angle, find the angles of the parallelogram. Solution: Let the two adjacent angles be x and 2x. In a parallelogram, sum of the adjacent angles are 180° ∴ x + 2x = 180° ⇒ 3x = 180° ⇒ x = 60° Thus, the two adjacent angles are 120° and 60°. Hence, the angles of the parallelogram are 120°, 60°, 120° and 60°. Question 2. If the diagonals of a quadrilateral bisect each other at right angles, then name the quadrilateral. Solution: Rhombus. Question 3. Three angles of a quadrilateral are equal and the fourth angle is equal to 144o. Find each of the equal angles of the quadrilateral. Solution: Let each equal angle of given quadrilateral be x. We know that, sum of all interior angles of a quadrilateral is 360° ∴ x + x + x + 144° = 360° 3x = 360° – 144° 3x = 216° x = 72° Hence, each equal angle of the quadrilateral is of 72o measures. Question 4. If ABCD is a parallelogram, then what is the measure of ∠A – ∠C ? Solution: ∠A – ∠C = 0° (opposite angles of parallelogram are equal] Question 5. PQRS is a parallelogram, in which PQ = 12 cm and its perimeter is 40 cm. Find the length of each side of the parallelogram. Solution: Here, PQ = SR = 12 cm Let PS = x and PS = QR ∴ x + 12 + x + 12 = Perimeter 2x + 24 =...

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NCERT Solutions for Class 9 Maths Chapter 8 – Quadrilaterals PDF Free PDF of NCERT Solutions for Class 9 Maths Chapter 8 – Quadrilaterals includes all the questions provided in NCERT Books prepared by Mathematics expert teachers as per CBSE NCERT guidelines from Mathongo.com. To download our free pdf of Chapter 8 Quadrilaterals Maths FREE PDF • • • • • • • • • • • • • • •