CBSE Class 8 Mathematics Understanding Quadrilaterals MCQs Set B with answers available in Pdf for free download. The MCQ Questions for Class 8 Mathematics with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 8 by CBSE, NCERT and KVS. Multiple Choice Questions are an important part of Term 1 and Term 2 exams for Grade 8 Mathematics and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for NCERT Class 8 Mathematics and also download more latest study material for all subjects

## Understanding Quadrilaterals Class 8 MCQ

Class 8 Mathematics students should refer to the following multiple-choice questions with answers for Understanding Quadrilaterals in standard 8. These MCQ questions with answers for Grade 8 Mathematics will come in exams and help you to score good marks

### Class 8 Understanding Quadrilaterals MCQ Questions with Answers

#### Question: The perimeter of a parallelogram is 180 cm. One side exceeds another by 10 cm. The sides of the parallelogram are

- a) 40 cm, 50 cm
- b) 50 cm each
- c) 45 cm each
- d) cannot be determined

**Answer: 40 cm, 50 cm**

#### Question: One of the diagonals of a rhombus is equal to a side of the rhombus. The angles of the rhombus are

- a) 60° and 120°
- b) 100° and 120°
- c) 60° and 80°
- d) 120° and 240°

**Answer: 60° and 120°**

#### Question: In the quadrilatral ABCD, the diagonals AC and BD are equal and perpendicular to each other. Then ABCD is a

- a) square
- b) rhombus
- c) parallelogram
- d) trapezium

**Answer: square**

#### Question: In a parallelogram ABCD, if AB = 2x + 5, CD = y + 1, AD = y + 5 and BC = 3x – 4 then ratio of AB : BC

- a) 31 : 35
- b) 71 : 21
- c) 12 : 11
- d) 4 : 7

**Answer: 31 : 35**

#### Question:

- a) 40°
- b) 90°
- c) 10°
- d) 50°

**Answer: 40°**

#### Question: A diagonal of a rectangle is inclined to one side of the rectangle at 25°. the acute angle between the diagonals is

- a) 50°
- b) 25°
- c) 40°
- d) 55°

**Answer: 50°**

#### Question:

- a) 50°
- b) 40°
- c) 45°
- d) 60°

**Answer: 50°**

#### Question: The quadrilateral formed by joining the mid points of the sides of a quadrilateral PQRS, taken in order, is a rectangle if

- a) diagonals of PQRS are perpendicular
- b) PQRS is a rectangle
- c) PQRS is a parallelogram
- d) diagonals sof PQRS is equal

**Answer: diagonals of PQRS are perpendicular**

#### Question: If angles P, Q, R and S of the quadrilateral PQRS, taken in order, are in the ratio 3: 7 : 6 : 4 then PQRS is a

- a) trapezium
- b) rhombus
- c) parallelogram
- d) kite

**Answer: trapezium**

#### Question: If PQ and RS are two perpendicular diameters of a circle, then PQRS is a

- a) square
- b) rectangle
- c) trapezium
- d) rhombus but not square

**Answer: square**

#### Question: AB and CD are diameters. Then ACBD is

- a) rectangle
- b) trapezium
- c) square
- d) isosceles trapezium

**Answer: rectangle**

#### Question: ABCD is a square E, F, G, H are the mid-mid-points of the four sides. Then the figure EFGH is

- a) square
- b) trapezium
- c) rectangle
- d) parallelogram

**Answer: square**

#### Question: If a quadrilateral has two adjacent sides equal and the other two sides equal it is called

- a) kite
- b) square
- c) parallelogram
- d) rectangle

**Answer: kite**

#### Question: Choose the correct statement:

- a) If the diagonals of a quadrilateral intersect at right angles, it is not necessary a rhombus
- b) Every quadrilateral is either a trapezium or a parallelogram or a kite
- c) The diagonals of a rectangle are perpendicular to each other
- d) The diagonals of a parallelogram are equal

**Answer: If the diagonals of a quadrilateral intersect at right angles, it is not necessary a rhombus**

#### Question: If two adjacent angles of a parallelogram are in the ratio 3:2, then the measure of the angles are

- a) 108°, 72°
- b) 100°, 80°
- c) 72°, 36°
- d) 144°, 36°

**Answer: 108°, 72°**

#### Question: ABCD is a quadrilateral. If AC and BD bisect each other then ABCD must be

- a) parallelogram
- b) square
- c) rectangle
- d) The angle

**Answer: parallelogram**

#### Question: The diameter of circumcircle of a rectangle is 10 cm and breath of the rectanelge is 6 cm. Its length i s

- a) 8 cm
- b) 6 cm
- c) 5 cm
- d) none

**Answer: 8 cm**

#### Question: The sum of the angles of a quadrilateral is

- a) 360°
- b) depends on the quadrilateral
- c) 180°
- d) 270°

**Answer: 360°**

#### Question: A parallelogram which has equal diagonals is a

- a) rectangle
- b) none
- c) square
- d) rhombus

**Answer: rectangle**

**CHAPTER –3.**

**UNDERSTANDING QUADRILATERALS**

**Put a tick mark(√) on the correct answer :**

**Q1.How many diagonals does a convex quadrilateral has ?**

(i) one (ii) two (iii) three (iv) four

**Q2.What is the sum of all interior angles of a pentagon ?**

(i) 180° (ii)360° (iii)540° (iv)720°

**Q3. How many sides a regular polygon has whose each exterior angle is 45**°** ?**

(i) eight (ii) seven (iii) six (iv) five

**Q4.What is the minimum interior angle possible for a regular polygon?**

(i) 60° (ii)80° (iii) 120° (iv)160°

**Q5. What is the maximum exterior angle possible for a regular polygon?**

(i) 60° (ii) 80° (iii) 120° (iv)160°

**Q6. What is the perimeter of the parallelogram whose two adjacent sides are 12cm & 7cm?**

(i) 28cm (ii) 38cm (iii) 84cm (iv)168cm

**Q7. What is the area of the rectangle whose perimeter is 16 cm & length 5 cm ?**

(i) 3.2cm^{2} (ii) 80cm^{2} (iii) 15cm^{2} (iv)16cm^{2}

**Q8.In the given parallelogram , find the value of ‘x’, ‘y’ & ‘z**’

**Q9.If the two adjacent angles of a parallelogram are equal then each of its angle is ?**

(i) 70° (ii) 80° (iii) 90° (iv) 100°

**Q10.If the two diagonals of a rhombus are 8cm & 6cm, its area is ?**

(i) 28cm^{2} (ii) 48cm^{2} (iii) 14cm^{2} (iv) 24cm^{2}^{ }

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