Ncert-maths-Quadrilaterals-Set A Welcome to your Ncert-maths-Quadrilaterals-Set A 1. If the area of quadrilateral ABCD is zero, then the four points A,B,C,D are not collinear collinear nothing can be said none of these None 2. Let M, N, P and Q be mid points of the edges AB, CD, AC and BD respectively of the tetrahedron ABCD. Further, MN is perpendicular to both AN and CD and PQ is perpendicular to both AC and BD. Then which of the following is/are correct : BC = DA AB = CD AC = BD AN = BN None 3. A,B,C,D are mid points of sides of parallelogram PQRS. If ar(PQRS)=36cm² then ar(ABCD) 30cm² 18 cm² 36cm² 24cm² None 4. The mid point of the side of a triangle along with any of the vertices as the fourth point make a parallelogram of area= ar(ABC) 1/4 ar(ABC) 1/2 ar(ABC) 1/3 ar(ABC) None 5. If length of each side of a rhombus PQRS is 8cm and ∠PQR=120º then what is the length (in cm) of QS? 12 4 6 8 None 6. If ABC is a triangle, right-angled at B and M,N are midpoints of AB and BC respectively, then what is 4(AN²+CM² ) equal to? 3AC² 5AC² 6AC² 4AC² None 7. Three angles of quadrilateral are 47º ,102º and 111º then the fourth angle is equal to: 260º 360º 100º 102º None 8. Which of the following statements is INCORRECT? Each side of a quadrilateral is less than the sum of the remaining three sides A quadrilateral has two diagonals A quadrilateral can have atmost three angles Each diagonal of a quadrilateral divides it into two triangles None 9. The quadrilateral formed by joining the mid-points of the sides AB,BC,CD,DA of a quadrilateral ABCD is a rhombus a trapezium but not a parallelogram a quadrilateral but not a trapezium a parallelogram only None 10. ABC is a triangle in which AB=AC. Let BC be produced to D. From a point E on the line AC let EF be a straight line such that EF is parallel to AB. Consider the quadrilateral ECDF thus formed. If ∠ABC=65º and ∠EFD=80º, then what is ∠FDC equal to? 45º 35º 41º 30º None 11. If D is mid-point of the side BC of a triangle ABC and AD is perpendicular to AC then (a²c²)/b² 1 3 2 4 None 12. The three angles of a quadrilateral are 80º, 70º and 120º. The fourth angle is: 110º 100º 90º 70º None 13. A square is drawn by joining the mid points of the given square a third square in the same way and this process continues indefinitely. If a side of the first square is 16 cm , then the sum of the area of all of the squares 128 sq. cm 256 sq. cm 1024 sq. cm 512 sq. cm None 14. If two adjacent angles of a parallelogram are in the ratio 2:3 , then the measure of angles are:72º,180º 80º,10º 72º,180º 36º,44º 96º,180º None 15. Which of the following statements is INCORRECT ? Each diagonal of a quadrilateral divides it into two triangles. A quadriiateral can have atmost three angles Each side of a quadrilateral is less than the sum of the renraining three sides A quadrilateral has two diagonals. None 16. The figure formed by joining the mid-points of the sides of a quadrilateral ABCD, taken in order, is a square only if, ABCD is a rhombus diagonals of ABCD are equal and perpendicular diagonals of ABCD are equal diagonals of ABCD are perpendicular. None 17. In a quadrilateral PQRS,∠P,∠Q,∠R and ∠S are interior angles. If ∠P:∠Q:∠R:∠S=1:2:3:4, then which angle is equal to 144º ∠R ∠S ∠Q ∠P None 18. Area of a quadrilateral ABCD is 20cm² and perpendiculars on BD from opposite vertices are 1 cm and 1.5 cm. The length of BD is 4 cm 5 cm 16 cm 18 cm None 19. If the angle of a quadrilateral are xº ,(x−10)º,(x+30)º and 2xº, then the greatest angle is: 148º 136º 180º 68º None 20. The angles of a quadrilateral are in the ratio 1:2:3:4 . Then the smallest angle is: 36º 72º 18º 142º None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
