## MCQ Questions for Class 8 Maths: Ch 3 Understanding Quadrilaterals

1. Which one of the following is a regular quadrilateral?

(a) Square

(b) Trapezium

(c) Kite

(d) Rectangle

â–º (a) Square

2. Which of the following quadilaterals has two pairs of adjacent sides equal and diagonals intersecting at right angles?

(a) square

(b) rhombus

(c) kite

(d) rectangle

â–º (c) kite

3. Which of the following quadrilaterals has two pairs of adjacent sides equal and diagonals intersecting at right angles?

(a) square

(b) rhombus

(c) kite

(d) rectangle

â–º (b) rhombus

4. How many diagonals does a rectangle have?

(a) 2

(b) 1

(c) 0

(d) none of these

â–º (a) 2

5. A _______ is both â€˜equiangularâ€™ and â€˜equilateralâ€™.

(a) regular polygon

(b) triangle

(c) quadrilateral

(d) none of these

â–º (a) regular polygon

6. The sum of the measures of the three angles of a triangle is ______.

(a) 360Â°

(b) 210Â°

(c) 180Â°

(d) none of these

â–º (c) 180Â°

7. The perimeter of a parallelogram is180 cm. If one side exceeds the other by 10 cm, what are the sides of the parallelogram?

(a) 40 cm, 50 cmÂ

(b) 45 cm each

(c) 50 cm each

(d) 45 cm, 50 cm

â–º (a) 40 cm, 50 cmÂ

8. ABCD is a parallelogram. The angle bisectors of âˆ A and âˆ D meet at O. What is the measure of âˆ AOD?

(a) 45Â°

(b) 90Â°

(c) 75Â°

(d) 180Â°

â–º (b) 90Â°

9.Â The diagonal of a rectangle is 10 cm and its breadth is6 cm. What is its length?

(a) 6 cm

(b) 5cm

(c) 8cm

(d) 4cm

â–º (c) 8cm

10. The ________ of a rhombus are perpendicular bisectors of one another.

(a) angles

(b) sides

(c) diagonals

(d) none of these

â–º (c) diagonals

11. State the name of a regular polygon of 6 sides.

(a) pentagon

(b) hexagon

(c) heptagon

(d) none of these

â–º (b) hexagon

12. A diagonal of a rectangle is inclined to one side of the rectangle at 25o. What is the measure of the acute angle between the diagonals?

(a) 25Â°

(b) 40Â°

(c) 50Â°

(d) 55Â°

â–º (c) 50Â°

13. Which of the following is true for the adjacent angles of a parallelogram?

(a) they are equal to each other

(b) they are complementary angles

(c) they are supplementary angles

(d) none of these.

â–º (c) they are supplementary angles

14. Which of the parallelograms has all sides equal and diagonals bisect each other at right angle?

(a) square

(b) rectangle

(c) rhombus

(d) trapezium.

â–º (c) rhombus

15. If ABCD is an isosceles trapezium, what is the measure of âˆ C?

(a) âˆ B

(b) âˆ A

(c) âˆ D

(d) 90Â°

â–º (c) âˆ D

16. In a square ABCD, the diagonals bisect at O. What type of a triangle is AOB?

(a) An equilateral triangle.

(b) An isosceles but not a right angled triangle.

(c) A right angled but not an isosceles triangle.

(d) An isosceles right angled triangle.

â–º (d) An isosceles right angled triangle.

17. In the quadrilateral ABCD, the diagonals AC and BD are equal and perpendicular to each other. What type of a quadrilateral is ABCD?

(a) A square

(b) A parallelogram

(c) A rhombus

(d) A trapezium

â–º (a) A square

18. The sides of a pentagon are produced in order. Which of the following is the sum of its exterior angles?Â Â Â Â

(a) 540Â°

(b) 180Â°

(c) 720Â°

(d) 360Â°

â–º (d) 360Â°

19.The opposite sides of a parallelogram are of ________ length.

(a) not equal

(b) different

(c) equal

(d) none of these

â–º (c) equal

20. What do you call a parallelogram which has equal diagonals?

(a) A trapezium

(b) A rectangle

(c) A rhombus

(d) A kite

â–º (b) A rectangle