This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 3 Understanding Quadrilaterals ā Quiz 3 š Homepage š Download PDF Books š Premium PDF Books Class 8 Maths Chapter 3 Understanding Quadrilaterals Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The sum of the measures of all the four angles of a quadrilateral is A) 90$^\circ$. B) 180$^\circ$. C) 360$^\circ$. D) 720$^\circ$. Show Answer Correct Answer: C) 360$^\circ$. 2. The diagonals of a rhombus are 6 cm and 8 cm. What will be the length of a side of the rhombus? A) 5 cm. B) 14 cm. C) 10cm. D) 25 cm. Show Answer Correct Answer: A) 5 cm. 3. ABCD is a rectangle and AC & BD are its diagonals. If AC = 10cm and BD is A) 10 cm. B) 5 cm. C) 15 cm. D) None of the above. Show Answer Correct Answer: A) 10 cm. 4. In a parallelogram opposite angles are A) Equal. B) Not equal. C) Can't say. D) None of these. Show Answer Correct Answer: A) Equal. 5. The polygon with 9 sides is called a A) Octagon. B) Quadrilateral. C) Nonagon. D) Hexagon. Show Answer Correct Answer: C) Nonagon. 6. Number of diagonals in a regular pentagon are A) 5. B) 6. C) 9. D) 12. Show Answer Correct Answer: A) 5. 7. Which of the following is a false statement for a parallelogram? A) Opposite sides are equal. B) Opposite angles are equal. C) Diagonals bisect each other. D) Diagonals bisect each other at right angles. Show Answer Correct Answer: D) Diagonals bisect each other at right angles. 8. The angle sum of a convex polygon with number of sides 8 is A) 720$^\circ$. B) 900$^\circ$. C) 1080$^\circ$. D) 1440$^\circ$. Show Answer Correct Answer: C) 1080$^\circ$. 9. Out of the three equal angles of a quadrilateral, each measures 70$^\circ$. The measure of the fourth angle is A) 90$^\circ$. B) 140$^\circ$. C) 150$^\circ$. D) 70$^\circ$. Show Answer Correct Answer: C) 150$^\circ$. 10. Which of the following satisfy the following properties?All sides are congruentAll angles are right angles.Opposite sides are parallel. A) Square. B) Rectangle. C) Kite. D) Rhombus. Show Answer Correct Answer: A) Square. 11. 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. Show Answer Correct Answer: A) 10 cm. 12. One angle of a concave quadrilateral is A) Acute. B) Obtuse. C) Straight. D) Reflex. Show Answer Correct Answer: D) Reflex. 13. A polygon in which all the angles are less than 180$^\circ$ is called ..... A) Convex Polygon. B) Concave Polygon. C) All the above. D) None of the above. Show Answer Correct Answer: A) Convex Polygon. 14. In which quadrilateral diagonals bisect each other at right angles A) Parallelogram. B) Rectangle. C) Square. D) Kite. Show Answer Correct Answer: C) Square. 15. A quadrilateral can have A) 4 acute angles. B) 4 obtuse angles. C) 3 Obtuse angles. D) 2 right angles and 2 obtuse angles. Show Answer Correct Answer: D) 2 right angles and 2 obtuse angles. 16. The measure of all angles together in a pentagon is A) 540 degrees. B) 360 degrees. C) 180 degrees. D) None of these. Show Answer Correct Answer: A) 540 degrees. 17. A figure is an equiangular parallelogram if and only if it is a A) Rectangle. B) Rhombus. C) Square. D) All. Show Answer Correct Answer: D) All. 18. The sum of of all angles in a quadrilateral is A) 360 degrees. B) 540 degrees. C) 180 degrees. D) None of these. Show Answer Correct Answer: A) 360 degrees. 19. The angles of a quadrilateral are in the ratio 1:2:3:4. The smallest angle is A) 72$^\circ$. B) 144$^\circ$. C) 36$^\circ$. D) 18$^\circ$. Show Answer Correct Answer: C) 36$^\circ$. 20. How many pairs of adjacent sides does a hexagon have? A) 4. B) 6. C) 8. D) 5. Show Answer Correct Answer: B) 6. 21. Which of the following statements is false for a square? A) It is a rectangle. B) It has all sides of equal length. C) All squares are not parallelograms. D) Eid darkness bisect each other at right angles. Show Answer Correct Answer: C) All squares are not parallelograms. 22. If angle A and angle B are two adjacent angles of the parallelogram. If angle A = 70$^\circ$ then angle B =? A) 70$^\circ$. B) 110$^\circ$. C) 130$^\circ$. D) None of the above. Show Answer Correct Answer: B) 110$^\circ$. 23. Name a quadrilateral that is equiangular and equilateral. A) Rhombus. B) Rectangle. C) Square. D) Kite. Show Answer Correct Answer: C) Square. 24. Each of the angles of a square is: A) Acute angle. B) Right angle. C) Obtuse angle. D) 180 degrees. Show Answer Correct Answer: B) Right angle. 25. What is the sum of exterior angles of a quadrilateral? A) 180. B) 90. C) 360. D) 540. 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