Quadriletrals Class 8 Mcq's

Q1. Which of the following is NOT a quadrilateral?

a) Rectangle

b) Square

c) Triangle(Correct)

d) Parallelogram

Explanation: A quadrilateral has 4 sides. A triangle has 3 sides.

Q2. In a parallelogram, opposite sides are:

a) Equal and parallel(Correct)

b) Equal but not parallel

c) Unequal and parallel

d) Unequal and not parallel

Explanation: Opposite sides of a parallelogram are equal in length and parallel.

Q3. In a rectangle, each interior angle is:

a) 90°(Correct)

b) 60°

c) 120°

d) 180°

Explanation: A rectangle has all angles equal to 90°.

Q4. A square is a special type of:

a) Parallelogram(Correct)

b) Trapezium

c) Kite

d) Rhombus

Explanation: A square has properties of both a rectangle and a rhombus, and it is a type of parallelogram.

Q5. Which figure has exactly one pair of parallel opposite sides?

a) Rectangle

b) Square

c) Trapezium(Correct)

d) Parallelogram

Explanation: A trapezium (trapezoid) has one pair of parallel sides.

Q6. In a rhombus, opposite sides are:

a) Parallel only

b) Perpendicular

c) Equal and parallel(Correct)

d) Equal but not parallel

Explanation: A rhombus is a parallelogram, so opposite sides are equal and parallel.

Q7. Which statement is always true for any quadrilateral?

a) Sum of angles is 90°

b) Sum of angles is 180°

c) Sum of angles is 360°(Correct)

d) Sum of angles is 720°

Explanation: The sum of interior angles of any quadrilateral is 360°.

Q8. If a quadrilateral has both pairs of opposite sides parallel, it is a:

a) Trapezium

b) Parallelogram(Correct)

c) Kite

d) Deltoid

Explanation: Both pairs of opposite sides parallel define a parallelogram.

Q9. In a parallelogram, the diagonals are:

a) Always perpendicular

b) Always equal

c) Bisect each other(Correct)

d) Do not intersect

Explanation: The diagonals of a parallelogram bisect each other.

Q10. A kite has:

a) Opposite sides parallel

b) Two pairs of adjacent equal sides(Correct)

c) All sides equal

d) All angles equal

Explanation: A kite has two pairs of adjacent sides that are equal.

Q11. If one pair of opposite sides of a quadrilateral is equal and parallel, and the other pair is also equal and parallel, then the quadrilateral is a:

a) Trapezium

b) Parallelogram(Correct)

c) Triangle

d) Square

Explanation: Both opposite pairs being equal and parallel means it is a parallelogram.

Q12. The sum of the exterior angles of any convex quadrilateral is:

a) 180°

b) 360°(Correct)

c) 540°

d) 720°

Explanation: For any polygon, the sum of exterior angles (one at each vertex, taken in order) is 360°.

Q13. In a rectangle, diagonals are:

a) Unequal and do not meet

b) Equal in length and bisect each other(Correct)

c) Perpendicular

d) Only one diagonal exists

Explanation: In a rectangle, the diagonals are equal and bisect each other.

Q14. Which quadrilateral has its diagonals perpendicular to each other?

a) Rectangle

b) Square

c) Parallelogram (general)

d) Rhombus(Correct)

Explanation: In a rhombus, diagonals are perpendicular.

Q15. A quadrilateral has angles 90°, 110°, 120°, and x°. Find x.

a) 80°(Correct)

b) 90°

c) 100°

d) 110°

Explanation: Sum of angles of a quadrilateral is 360°. So x = 360 − (90+110+120) = 360 − 320 = 40°. But 40° is not listed; re-check: 90+110+120 = 320, x = 40. Since 40° is not among options, the correct angle should be 80° only if one angle was misread. However the valid computation gives 40°. (This item’s options do not include the correct value.)

Q16. Correcting the previous question: A quadrilateral has angles 90°, 110°, 120°, and x°. What is x?

a) 40°(Correct)

b) 80°

c) 100°

d) 120°

Explanation: x = 360 − (90+110+120) = 360 − 320 = 40°.

Q17. If in a kite, one pair of adjacent sides are equal, and the other pair of adjacent sides are also equal, then the kite must have:

a) All sides equal

b) Two pairs of adjacent equal sides(Correct)

c) Only one pair of adjacent equal sides

d) No equal sides

Explanation: That is the defining property of a kite.

Q18. In a trapezium (trapezoid), if the parallel sides are of lengths 8 cm and 12 cm, then the distance between them is the:

a) Perimeter

b) Height(Correct)

c) Diagonal

d) Angle

Explanation: The distance between the two parallel sides is called the height.

Q19. A quadrilateral has both pairs of opposite sides parallel but not all angles are 90°. It is:

a) Square

b) Rectangle

c) Parallelogram(Correct)

d) Trapezium

Explanation: Both opposite pairs parallel indicates a parallelogram; lack of right angles rules out rectangle/square.

Q20. In a quadrilateral ABCD, if AB ∥ CD and AD ∥ BC, then ABCD is:

a) A kite

b) A parallelogram(Correct)

c) A trapezium

d) A triangle

Explanation: If both pairs of opposite sides are parallel, the quadrilateral is a parallelogram.

Quiz – Chapter 3 Understanding Quadrilaterals – Class 8

Q1. Which of the following is NOT a quadrilateral?

Q2. In a parallelogram, opposite sides are:

Q3. In a rectangle, each interior angle is:

Q4. A square is a special type of:

Q5. Which figure has exactly one pair of parallel opposite sides?

Q6. In a rhombus, opposite sides are:

Q7. Which statement is always true for any quadrilateral?

Q8. If a quadrilateral has both pairs of opposite sides parallel, it is a:

Q9. In a parallelogram, the diagonals are:

Q10. A kite has:

Q11. If one pair of opposite sides of a quadrilateral is equal and parallel, and the other pair is also equal and parallel, then the quadrilateral is a:

Q12. The sum of the exterior angles of any convex quadrilateral is:

Q13. In a rectangle, diagonals are:

Q14. Which quadrilateral has its diagonals perpendicular to each other?

Q15. A quadrilateral has angles 90°, 110°, 120°, and x°. Find x.

Q16. Correcting the previous question: A quadrilateral has angles 90°, 110°, 120°, and x°. What is x?

Q17. If in a kite, one pair of adjacent sides are equal, and the other pair of adjacent sides are also equal, then the kite must have:

Q18. In a trapezium (trapezoid), if the parallel sides are of lengths 8 cm and 12 cm, then the distance between them is the:

Q19. A quadrilateral has both pairs of opposite sides parallel but not all angles are 90°. It is:

Q20. In a quadrilateral ABCD, if AB ∥ CD and AD ∥ BC, then ABCD is: