This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Mathematics > Triangles > Class 10 Maths Chapter 6 Triangles – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Maths Chapter 6 Triangles Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Sides of two similar triangles are in the ratio 4:9. Areas of these triangles are in the ratio A) 16:81. B) 4:9. C) 81:16. D) 2:3. Show Answer Correct Answer: A) 16:81. 2. How many hours are there in 10 days? A) 120 hours. B) 240 hour. C) 100 hours. D) 200 hours. Show Answer Correct Answer: B) 240 hour. 3. In a $\Delta$ $\angle BAC$ A) 2.5 cm. B) 11.3cm. C) 1.2 cm. D) 3.5 cm. Show Answer Correct Answer: A) 2.5 cm. 4. What does congruent mean? A) Same shape, different size. B) Not same shape, or size. C) Same size, same shape. D) None of the above. Show Answer Correct Answer: C) Same size, same shape. 5. The length of the diagonals of a rhombus are 16 cm and 12 cm. Find the length of side of the rhombus. A) 12cm. B) 8cm. C) 10cm. D) 6cm. Show Answer Correct Answer: C) 10cm. 6. Sides of triangles are given below. Determine which of them is not a right triangle . A) 20 cm, 21 cm, 29 cm. B) 15 cm, 8 cm, 19 cm. C) 13 cm, 12 cm, 5 cm. D) 7 cm, 24 cm, 25 cm. Show Answer Correct Answer: B) 15 cm, 8 cm, 19 cm. 7. The total measure of the three angles of a triangle is A) 120 degree. B) 150 degree. C) 180 degree. D) 90 degree. Show Answer Correct Answer: C) 180 degree. 8. If the Pythagoras property holds for some triangle, will the triangle be A) Right-angled. B) Acute-angled. C) Obtuse-angled. D) None of these. Show Answer Correct Answer: A) Right-angled. 9. All angles in similar figures are congruent. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. A straight water slide makes a 40 angle with the surface of the water. If the slide is 11.5 meters high, how long is the slide? A) 17.8908 m. B) 7.3920 m. C) 8.8095 m. D) 15.0121 m. Show Answer Correct Answer: A) 17.8908 m. 11. If $\Delta ABC$ $\Delta DEF$ A) 4 cm. B) 16cm. C) 8cm. D) 12cm. Show Answer Correct Answer: A) 4 cm. 12. The medians of a triangle meet at: A) Centroid. B) Circumcentre. C) Incentre. D) Orthocentre. Show Answer Correct Answer: A) Centroid. 13. What are the two ways to classify triangles? A) By the angles and number of sides. B) By the angles and side lengths. C) By the side lengths and the size of the triangle. D) By the angles and the how many points. Show Answer Correct Answer: B) By the angles and side lengths. 14. Two sides of an isosceles triangle are 5 cm and 6 cm . Then the length of the third side is A) 5 cm. B) 6 cm. C) 5 cm or 6 cm. D) None. Show Answer Correct Answer: C) 5 cm or 6 cm. 15. The perpendicular line segment from a vertex of a triangle to its opposite side is called an ..... of the triangle. A) Altitude. B) Median. C) Base. D) None of the above. Show Answer Correct Answer: A) Altitude. 16. Corresponding sides of two similar triangles are in the ratio of 2:3. If the area of small triangle is 48 sq cm then the area of large triangle is: A) 230 sq cm. B) 107 sq cm. C) 108 sq cm. D) 106 sq cm. Show Answer Correct Answer: C) 108 sq cm. 17. Refer fig sharedWhat is the length of AH? A) 3/4h. B) H/4. C) 2/3 h. D) H/2. Show Answer Correct Answer: A) 3/4h. 18. What is the opposite of squaring a number? A) Multiply. B) Square root. C) Divide. D) Fractions. Show Answer Correct Answer: B) Square root. 19. A ladder is placed against a wall such that its foot is at a distance of 2.5 m from the wall and its top reaches a window 6 m above the ground. Find the length of the ladder. A) 6.5 m. B) 6.25 m. C) 5.6 m. D) 42.25 m. Show Answer Correct Answer: A) 6.5 m. 20. In a right-angled triangle, the measure of the acute angles must add up to: A) 60$^\circ$. B) 90$^\circ$. C) 45$^\circ$. D) 30$^\circ$. Show Answer Correct Answer: B) 90$^\circ$. 21. Under a given correspondence, two triangles are congruent if the three sides of the first are equal to the three corresponding sides of the other.The above is known as: A) SSS congruence of two triangles. B) SAS congruence of two triangles. C) ASA congruence of two triangles. D) None of these. Show Answer Correct Answer: A) SSS congruence of two triangles. 22. If triangle ABC is similar to triangle DEF, then, A) AB/DE = BC/DF = CA/EF. B) AB/BC = CA/DE = EF/FD. C) AB/FD = BC/EF = CA/DE. D) AB/DE = BC/EF = CA/FD. Show Answer Correct Answer: D) AB/DE = BC/EF = CA/FD. 23. Which of the following statement is false? A) The sum of the lengths of any two sides of a triangle is less than the third side. B) In a right angled triangle hypotenuse is the longest side. C) A, B, C are collinear if AB + BC = AC. D) None of these. Show Answer Correct Answer: D) None of these. 24. What does SSS stand for? A) Small Small Small. B) Side Side Side. C) Small Side Small. D) Sam's Silly Side. Show Answer Correct Answer: B) Side Side Side. 25. Which of the following triangles have the same side lengths? A) Scalene. B) Isosceles. C) Equilateral. D) None of these. Show Answer Correct Answer: C) Equilateral. 26. If two angles of a triangle are 50$^\circ$ and 60$^\circ$, the third angle is: A) 60$^\circ$. B) 70$^\circ$. C) 50$^\circ$. D) 80$^\circ$. Show Answer Correct Answer: B) 70$^\circ$. 27. If triangle ABC is similar to triangle DEF such that 2AB = DE and BC = 8 cm then EF will be A) 12 cm. B) 16 cm. C) 10 cm. D) 14 cm. Show Answer Correct Answer: B) 16 cm. 28. If one angle of a triangle is 90$^\circ$, the triangle is: A) Obtuse. B) Right-angled. C) Scalene. D) Acute. Show Answer Correct Answer: B) Right-angled. 29. What does SSS prove? A) Triangle angle sum. B) Triangles similar. C) Triangles congruent. D) Nothing. Show Answer Correct Answer: C) Triangles congruent. 30. Can the following 3 numbers be side measures of a triangle3, 10, 8 A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 31. Can the following 3 numbers be side measures of a triangle5, 2, 4 A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 32. A triangle in which all the three sides are of equal lengths is called an ..... A) Equilateral triangle. B) Scalene triangle. C) Isosceles triangle. D) None of the above. Show Answer Correct Answer: A) Equilateral triangle. 33. A man goes 24 m towards West and then 10 m towards North. How far is he from the starting point? A) 25cm. B) 34cm. C) 24cm. D) 26cm. Show Answer Correct Answer: D) 26cm. 34. A RIGHT triangle has ..... A) 1 right angle. B) No right angles. C) 2 right angles. D) 3 right angles. Show Answer Correct Answer: A) 1 right angle. 35. Parallelograms standing on the same base and between the same parallels area ..... in area. A) Equal. B) One-third. C) Half. D) Double. Show Answer Correct Answer: A) Equal. 36. Which of these triangles is made up of 3 angles that each measure less than 90 degrees? A) Obtuse triangle. B) Acute triangle. C) Right triangle. D) Scalene triangle. Show Answer Correct Answer: B) Acute triangle. 37. What type of triangle has all angles measuring 60$^\circ$? A) Equilateral. B) Isosceles. C) Scalene. D) None of the above. Show Answer Correct Answer: A) Equilateral. 38. A triangle has sides of 5 ft. and 17 ft. Which of the below could be the length of the third side?24 ft.23 ft.19 ft. 15 ft.12 ft.11 ft. A) 24ft, 11ft. B) 23ft, 19ft, 15ft, 12ft. C) 19ft. D) 19ft, 15ft. Show Answer Correct Answer: D) 19ft, 15ft. 39. A 2.5m long ladder leans against the wall of a building. The base of the ladder is 1.5m away from the wall. What is the height of the wall? A) 2 cm. B) 2 m. C) 8 m. D) 5 m. Show Answer Correct Answer: B) 2 m. 40. Which of the two cannot form a triangle ..... ? A) 4.5 cm, 3.5 cm, 6.4 cm. B) 2.5 cm, 4.2 cm, 8 cm. C) All the above. D) None of the above. Show Answer Correct Answer: A) 4.5 cm, 3.5 cm, 6.4 cm. 41. If you are given three angles of a triangle what will be true? A) You can't make any triangles with this information. B) You can only make 2 unique triangles. C) You can make infinitely many unique triangles. D) You can only make one unique triangle. Show Answer Correct Answer: C) You can make infinitely many unique triangles. 42. Do the following lengths form a triangle2 inches10 inches13 inches A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 43. A triangle in which all sides are of equal length is called ..... A) Obtuse angled Triangle. B) Equilateral triangle. C) Isosceles Triangle. D) Right angled Triangle. Show Answer Correct Answer: B) Equilateral triangle. 44. Can the following 3 numbers be side measures of a triangle9, 6, 5 A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 45. Can the following 3 numbers be side measures of a triangle4, 7, 8 A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 46. What is ratio of any two corresponding sides? A) Scale Factor. B) Corresponding Sides. C) Similar Figures. D) None of the above. Show Answer Correct Answer: A) Scale Factor. 47. A SCALENE triangle has ..... A) 2 equal sides. B) 4 equal sides. C) No equal sides. D) 3 equal sides. Show Answer Correct Answer: C) No equal sides. 48. Which of the following statements is NOT true if ABCD $\cong$ A) $\angle A\\cong\\angle U$. B) $\overline{AB}\\cong\\overline{RS}$. C) $\angle T\\cong\\angle C$. D) $\overline{CD}\\cong\\overline{TU}$. Show Answer Correct Answer: A) $\angle A\\cong\\angle U$. 49. If one angle of a triangle is equal to the sum of the other two angles, the triangle is: A) Equilateral. B) Obtuse. C) Right. D) Acute. Show Answer Correct Answer: A) Equilateral. 50. In an equilateral triangle, each angle measure ..... A) 45$^{o}$. B) 60$^{o}$. C) 30$^{o}$. D) 90$^{o}$. Show Answer Correct Answer: B) 60$^{o}$. 51. If the ratio of the perimeter of two similar triangles is 4:25, then find the ratio of the areas of the similar triangles. A) 4:25. B) 2:5. C) 16:625. D) None of the above. Show Answer Correct Answer: C) 16:625. 52. A triangle has angle measurements of 54$^\circ$, 52$^\circ$, and 74$^\circ$. What kind of triangle is it? A) Acute triangle. B) Right triangle. C) Obtuse triangle. D) None of the above. Show Answer Correct Answer: A) Acute triangle. 53. All ..... triangles are similar A) Right angled. B) Isosceles. C) Equilateral. D) Scalene. Show Answer Correct Answer: C) Equilateral. 54. Classify this triangle.e A) Acute scalene. B) Acute equilateral. C) E. right isosceles. D) Acute isosceles. E) Right scalene. Show Answer Correct Answer: C) E. right isosceles. 55. An obtuse triangle is any triangle that has one angle that measures ..... 90 degrees. A) Exactly. B) Less than. C) Greater than. D) None of these is correct. Show Answer Correct Answer: C) Greater than. 56. If you are given two sides of a triangle what will be true? A) You can only make one unique triangle. B) You can make infinitely many unique triangles. C) You can't make any triangles with this information. D) You can only make 2 unique triangles. Show Answer Correct Answer: B) You can make infinitely many unique triangles. 57. Two polygons of the same number of sides are similar, if(i) all the corresponding angles are equaland(ii) all the corresponding sides are in the same ratio . A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 58. If two angles of a triangle are 60 degree each, then the triangle is A) Isosceles but not equilateral. B) Scalene. C) Right-angled. D) Equilateral. Show Answer Correct Answer: D) Equilateral. 59. At least how many equal sides does an isosceles triangle have? A) 0. B) 3. C) 2. D) 1. Show Answer Correct Answer: C) 2. 60. A triangle in which one angle is right angle is called ..... A) Right angled Triangle. B) Obtuse angled Triangle. C) Equilateral triangle. D) Acute angled Triangle. Show Answer Correct Answer: A) Right angled Triangle. ← PreviousNext →Related QuizzesMathematics QuizzesClass 10 QuizzesClass 10 Maths Chapter 6 Triangles Quiz 1Class 10 Maths Chapter 6 Triangles Quiz 2Class 10 Maths Chapter 6 Triangles Quiz 4Class 10 Maths Chapter 6 Triangles Quiz 5Class 10 Maths Chapter 6 Triangles Quiz 6 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books