This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Maths Chapter 6 Triangles – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Maths Chapter 6 Triangles Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. True or FalseAn obtuse triangle has 1 obtuse angle. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. What is a triangle that contains one of the angle 90$^{0}$ called? A) Acute triangle. B) Right triangle. C) Obtuse triangle. D) None of the above. Show Answer Correct Answer: B) Right triangle. 3. An isosceles triangle always has: A) Two equal angles. B) Three equal angles. C) All angles different. D) All angles obtuse. Show Answer Correct Answer: A) Two equal angles. 4. Can a triangle have sides with the given lengths?3 in, 6 in, 2 in A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 5. A triangle ABC, AB = 7.8 cm, AC= 7 cm and BC = 6 cm is ..... A) Isosceles Triangle. B) Scalene triangle. C) Equilateral triangle. D) Right angled Triangle. Show Answer Correct Answer: B) Scalene triangle. 6. An equiangular triangle has ..... A) No congruent angles. B) All congruent angles. C) Two congruent angles. D) None of the above. Show Answer Correct Answer: B) All congruent angles. 7. What type of triangle has 2 congruent sides? A) Scalene. B) Equilateral. C) Exterior Angle Theorem. D) Isosceles. Show Answer Correct Answer: D) Isosceles. 8. The sum of the squares of the sides of a rhombus is equal to ..... ? A) The sum of its diagonals. B) The sum of thesquares of its diagonals. C) Product of its diagonals. D) Sum of its sides and its diagonals. Show Answer Correct Answer: B) The sum of thesquares of its diagonals. 9. The incentre of a triangle is the point where: A) Medians meet. B) Angle bisectors meet. C) Altitudes meet. D) Perpendicular bisectors meet. Show Answer Correct Answer: B) Angle bisectors meet. 10. If the scale factor is less than one, the new figure will be A) An enlargement. B) A reduction. C) A scale factor. D) None of the above. Show Answer Correct Answer: B) A reduction. 11. All squares are ..... ? A) Equal. B) Similar. C) Congruent. D) None of the above. Show Answer Correct Answer: B) Similar. 12. Sandra is trying to make a flag out of fabric for her fashion class. She wants two of the angles to be 32 degrees and 64 degrees. What will the third angle need to be? A) 32. B) 84. C) 96. D) 264. Show Answer Correct Answer: B) 84. 13. What is the sum of the angles inside a triangle? A) 90. B) 180. C) 360. D) None of the above. Show Answer Correct Answer: B) 180. 14. If teh 17th term of an A.P exceeds its 10th term by 7, find teh common difference. A) 0. B) 1. C) -1. D) -2. Show Answer Correct Answer: B) 1. 15. Determine which of them are right triangles:(i) a= 6 cm, b = 8 cm, c = 10 cm(ii) a= 5 cm, b= 8 cm, = 11 cm A) (i). B) (ii). C) All the above. D) None of the above. Show Answer Correct Answer: A) (i). 16. The triangle whose lengths of sides are 3 cm, 4 cm, 5 cm is a ..... A) Obtuse-angled triangle. B) Acute-angled triangle. C) Right-angled triangle. D) None of these. Show Answer Correct Answer: C) Right-angled triangle. 17. All circles are A) Similar. B) Congruent. C) Both similar and congruent. D) None of these. Show Answer Correct Answer: A) Similar. 18. The bottom of a 14-foot straight ladder is set into the ground 7 feet away from a wall. When the top of the ladder is leaned against the wall, its angle of elevation is 60. What is the distance above the ground it will reach? A) 12.1243 ft. B) 4.0414 ft. C) 7 ft. D) 9.8994 ft. Show Answer Correct Answer: A) 12.1243 ft. 19. An isosceles triangle has ..... A) No congruent sides. B) All congruent sides. C) Two congruent sides. D) None of the above. Show Answer Correct Answer: C) Two congruent sides. 20. Can the following 3 numbers be side measures of a triangle11, 12, 9 A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 21. How many acute angles must an acute triangle have? A) 2. B) 1. C) 4. D) 3. Show Answer Correct Answer: D) 3. 22. A triangle in which two sides are equal is called: A) Scalene triangle. B) Equilateral triangle. C) Isosceles triangle. D) None of the above. Show Answer Correct Answer: C) Isosceles triangle. 23. What does the term scalene mean? A) All sides equal. B) Two sides equal. C) 90 degree angle. D) All sides not equal. Show Answer Correct Answer: D) All sides not equal. 24. If two sides of a triangle are not equal, the triangle is called A) Isosceles. B) Scalene. C) Triangle. D) Right-angle triangle. Show Answer Correct Answer: B) Scalene. 25. If a car travels 240 km in 4 hours, what is its average speed? A) 50 km/h. B) 70 km/h. C) 60 km/h. D) 80 km/h. Show Answer Correct Answer: C) 60 km/h. 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