Triangles Questions and Answers | Online Quiz for Practice

46. Point of concurrency of three medians of a triangle is called.

1. Circumcentre
2. In centre three
3. Ortho centre
4. Centroid

47. Similar triangles are of the same shape but.........in sizes.

1. None of these
2. The same
3. Different
4. Both a and b

48. Sum of all the interior angles of a triangle is.

1. 360^o
2. 90^o
3. 150^o
4. 180^o

49. Sum of interior angles of a triangle is

1. 240^o
2. 60^o
3. 120^o
4. 180^o

50. The altitudes of a right angled triangle are concurrent at the

1. Vertical angle
2. Midpoint of hypotenuse
3. Vertex of right angle
4. Midpoint of base

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

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

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

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

53. The diagonals of a parallelogram each other:

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

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

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

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

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

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

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

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

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

58. The obtuse-angled triangle must have

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

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

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

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

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