Chapter 8 – Quadrilaterals

2. ABCD is a trapezium in which AB || DC and ∠A = ∠B = 45^o. Find angles C and D of the trapezium. 2. ABCD is a trapezium in which AB || DC and ∠A = ∠B = 45^o. Find angles C and D of the trapezium. July 1, 2021 Category: Chapter 8 - [...]

1. One angle of a quadrilateral is of 108^o and the remaining three angles are equal. Find each of the three equal angles. 1. One angle of a quadrilateral is of 108^o and the remaining three angles are equal. Find each of the three equal angles. July 1, 2021 Category: Chapter 8 - Quadrilaterals , [...]

14. Opposite angles of a quadrilateral ABCD are equal. If AB = 4 cm, determine CD. 14. Opposite angles of a quadrilateral ABCD are equal. If AB = 4 cm determine CD. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 ,

13. Diagonals of a quadrilateral ABCD bisect each other. If ∠A = 35o, determine ∠B. 13. Diagonals of a quadrilateral ABCD bisect each other. If ∠A = 35o determine ∠B. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 ,

12. Can all the angles of a quadrilateral be right angles? Give reason for your answer. 12. Can all the angles of a quadrilateral be right angles? Give reason for your answer. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 ,

11. Can all the angles of a quadrilateral be acute angles? Give reason for your answer. 11. Can all the angles of a quadrilateral be acute angles? Give reason for your answer. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 ,

10. In Fig.8.2, ABCD and AEFG are two parallelograms. If ∠C = 55^o, determine ∠F. 10. In Fig.8.2 ABCD and AEFG are two parallelograms. If ∠C = 55^o determine ∠F. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 ,

9. In Fig.8.1, it is given that BDEF and FDCE are parallelograms. Can you say that BD = CD? Why or why not? 9. In Fig.8.1 it is given that BDEF and FDCE are parallelograms. Can you say that BD = CD? Why or why not? July 1, 2021 Category: Chapter 8 - Quadrilaterals , [...]

8. In ∆ABC, AB = 5 cm, BC = 8 cm and CA = 7 cm. If D and E are respectively the mid-points of AB and BC, determine the length of DE. 8. In ∆ABC AB = 5 cm BC = 8 cm and CA = 7 cm. If D and E are respectively [...]

7. Can all the four angles of a quadrilateral be obtuse angles? Give reason for your answer. 7. Can all the four angles of a quadrilateral be obtuse angles? Give reason for your answer. July 1, 2021 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 ,