Triangles MCQs Quiz Multiple Choice Questions & Answers Page 2

51. The angles opposite to equal sides of a triangle are:

1. Equal
2. Unequal
3. supplementary angles
4. Complementary angles

52. The common point of three or more than three lines is called

1. central point
2. point of concurrency
3. vertex
4. centroid

53. The diagonals of a parallelogram each other:

1. Bisect
2. Trisect
3. Bisect at right angle
4. None of these

54. The internal bisectors of the angles of a triangle meet at a point called the...............of the triangle.

1. In centre
2. Ortho centre
3. Circumcentre
4. None

55. The kind of triangle which has two equal sides is

1. exterior angle
2. equilateral triangle
3. isosceles triangle
4. scalene triangle

56. The median bisecting the base of an isosceles triangle is.................to the base.

1. parallel
2. perpendicular
3. collinear
4. adjacent

57. The medians of a triangle cut each other in the ratio:

1. 4:1
2. 3:1
3. 2:1
4. 1:1

58. The obtuse-angled triangle must have

1. four obtuse angles
2. three obtuse angles
3. two obtuse angles
4. one obtuse angle

59. The point of concurrency of the three altitudes of a triangle is called its

1. Ortho centre
2. In centre
3. Circumcentre
4. None

60. The point of concurrency of the three perpendicular bisectors of the sides of a triangle is called the.........of the triangle.

1. Circumcentre
2. In centre
3. Ortho centre
4. None

61. The right bisectors of the three sides of a triangle are

1. Congruent
2. Collinear
3. Concurrent
4. Parallel

62. The right-angled triangle must have

1. four right angles
2. three right angles
3. one right angle
4. two right angles

63. The side opposite to right angle in right angled triangle is called

1. Base
2. Perpendicular
3. Hypotenuse
4. Altitude

64. The sum of the angles of a triangle is:

1. at least 180^o
2. exactly 180^o
3. at most 180^o
4. less than 180^o

65. The triangles are said to be............if they are equiangular.

1. Congruent
2. Similar
3. Equal
4. Scalene

66. The triangles can be classified on the basis of

1. the number of equal sides
2. the types of angles
3. length of line segments
4. both a and b

67. The...........altitudes of an isosceles triangle are congruent:

1. Two
2. Three
3. Four
4. None

68. Three or more than three lines passing through the same point are called............lines.

1. congruent
2. concurrent
3. parallel
4. perpendicular

69. Two figures are said to be congruent, if they have exactly the same

1. Area
2. Perimeter
3. Shape and size
4. length and width

70. Two Triangles are congruent, if two angles and the side included between them in one of the triangle are equal to the two angle and the side included them of the Other triangle. This is known as

1. RHS congruence criterion
2. SAS congruence criterion
3. ASA congruence criterion
4. AAA congruence criterion

71. Which of the following cannot be the side of a triangle?

1. 8 cm, 5 cm, 4 cm
2. 10 cm, 10 cm, 4cm
3. 10 cm, 6 cm, 4 cm
4. 9 cm, 8 cm, 7 cm

72. Which of the following is the measures of a right angled triangle?

1. 7cm, 3 cm, 9 cm
2. 4.5 cm, 6 cm, 5 cm
3. 8 cm, 15 cm, 17 cm
4. 4 cm, 3.5 cm 4 cm

73. Which of the following sets of triangles could be the lengths of the sides of a right angled triangle.

1. 3cm, 4 cm, 6 cm
2. 9 cm, 16 cm, 26 cm
3. 1.5 cm, 3.6 cm, 3.9 cm
4. 7 cm, 24 cm 26 cm

74. Which of the following triangles have the same side lengths?

1. Scalene
2. Isosceles
3. Equilateral
4. None of these

75. Which one of the following is not a criterion for congruence of two triangles?

1. ASA
2. SSA
3. SAS
4. SSS