Class 8 Maths Chapter 3 (Understanding Quadrilaterals) MCQs are provided here, online. These objective questions are designed for students, as per the CBSE syllabus (2020-2021) and NCERT guidelines. Solving the chapter-wise questions will help students understand each concept and help to score good marks in exams. Also, learn important questions for class 8 Maths here at BYJU’S.

## MCQs on Class 8 Understanding Quadrilaterals

Multiple Choice Questions (MCQs) are available for Class 8 Understanding Quadrilaterals chapter. Each problem consists of four multiple options, out of which one is the correct answer. Students have to solve the problem and select the correct answer.

**1. Which of the following is not a quadrilateral?**

A. Square

B. Rectangle

C. Triangle

D. Parallelogram

Answer: **C**

Explanation: A quadrilateral is a four-sided polygon but triangle is a three-sided polygon.

**2. Which of the following quadrilaterals has two pairs of adjacent sides equal and its diagonals intersect at 90 degrees?**

A. Square

B. Kite

C. Rhombus

D. Rectangle

Answer: **B**

**3. Which one of the following is a regular quadrilateral?**

A. Square

B. Trapezium

C. Kite

D. Rectangle

Answer: **A**

Explanation: A square has all its sides equal and angles equal to 90 degrees.

**4. If AB and CD are two parallel sides of a parallelogram, then:**

A. AB>CD

B. AB<CD

C. AB=CD

D. None of the above

Answer: **C**

**5. The perimeter of a parallelogram whose parallel sides have lengths equal to 12 cm and 7 cm is:**

A. 21 cm

B. 42 cm

C. 19 cm

D. 38 cm

Answer: **D**

Explanation: Perimeter of parallelogram = 2 (Sum of Parallel sides)

P = 2 (12 + 7)

P = 2 (19)

P = 38 cm

**6. If ∠A and ∠C are two opposite angles of a parallelogram, then:**

A. ∠A > ∠C

B. ∠A = ∠C

C. ∠A < ∠C

D. None of the above

Answer: **B**

Explanation: Opposite angles of a parallelogram are always equal.

**7. If ∠A and ∠B are two adjacent angles of a parallelogram. If ∠A = 70**°**, then ∠B = ?**

A. 70°

B. 90°

C. 110°

D. 180°

Answer: **C**

Explanation: The adjacent angles of parallelogram are supplementary.

∠A + ∠B = 180°

70° + ∠B = 180°

∠B = 180 – 70° = 110°

**8. ABCD is a rectangle and AC & BD are its diagonals. If AC = 10 cm, then BD is:**

A. 10 cm

B. 5 cm

C. 15 cm

D. 20 cm

Answer: **A**

Explanation: The diagonals of a rectangle are always equal.

**9. Each of the angles of a square is:**

A. Acute angle

B. Right angle

C. Obtuse angle

D. 180 degrees

Answer: **B**

Explanation: All the angles of square is at right angle.

**10. The quadrilateral whose diagonals are perpendicular to each other is:**

A. Parallelogram

B. Rectangle

C. Trapezium

D. Rhombus

Answer: **D**

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