These NCERT Solutions for Class 9 Maths Chapter 9 Areas of Parallelograms and Triangles Ex 9.1 Questions and Answers are prepared by our highly skilled subject experts.

## NCERT Solutions for Class 9 Maths Chapter 9 Areas of Parallelograms and Triangles Exercise 9.1

Question 1.

Which of the following figures lie on the same base and between the same parallels. In such a case, write the common base and the two parallels.

Solution:

(i) In figure 9.8(i), trapezium ABCD and triangle PCD have a common base CD and between seine parallels AB and CD.

(ii) In fig 9.8 (ii), parallelogram PQRS and trapezium MNRS have common base RS, but they are not in the same parallels.

(iii) In figure 9.8(iii), parallelogram PQRS and triangle TQR have a common base QR and between same parallels QR and PS.

(iv) In figure 9.8(iv), parallelogram ABCD and triangle PQR have no common base but they are in between the same parallels AD and BC.

(v) In figure 9.8(v), parallelogram ABCD and parallelogram APQD have a common base AD, and between same parallels AD and BQ.

(vi) In figure 9.8(vi), parallelograms PBCS and PBAD lie on the same base PS, but not in the same parallels.