Basic Geometrical Ideas

60. Which of the following is true?

  • (A) Diameter > Radius
  • (B) Diameter < Radius
  • (C) Diameter = Radius
  • (D) None of these

59. Which of the following is the correct relation?

  • (A) Diameter = 2 × Radius
  • (B) 2 × Diameter = Radius
  • (C) Diameter = Radius/2
  • (D) None of these

58. The region in the interior of a circle enclosed by an arc on one side and a pair of radii on the other two sides is known as

  • (A) Sector
  • (B) Segment
  • (C) Semi-circle
  • (D) None of these

57. The diameter of a circle divides it into two

  • (A) Semi-circles
  • (B) Sector
  • (C) Segment
  • (D) Quarter-circles

56. Number of radius in a circle is

  • (A) Zero
  • (B) One
  • (C) Two
  • (D) Infinite

55. Number of diameters in a circle is

  • (A) Zero
  • (B) One
  • (C) Two
  • (D) Infinite

54. A simple curve is one that

  • (A) Does not cross itself
  • (B) Cross itself
  • (C) If its ends are joined
  • (D) If its ends are not joined

53. A curve is said to be closed

  • (A) If does not cross itself
  • (B) If cross itself
  • (C) If its ends are joined
  • (D) If its ends are not joined

52. A curve is said to be open

  • (A) If does not cross itself
  • (B) If cross itself
  • (C) If its ends are joined
  • (D) If its ends are not joined

51. In a polygon, the meeting point of a pair of sides is called a

  • (A) Centre
  • (B) Vertex
  • (C) Diagonal
  • (D) Side

50. In a polygon, the join of any two non-adjacent vertices is called a

  • (A) Centre
  • (B) Vertex
  • (C) Diagonal
  • (D) Side

49. The number of diagonals of a triangle is

  • (A) 0 
  • (B) 1 
  • (C) 2 
  • (D) 3

48. The number of diagonals of a quadrilateral is

  • (A) 4 
  • (B) 1 
  • (C) 2 
  • (D) 3

47. The number of diagonals of a pentagon is

  • (A) 3 
  • (B) 4 
  • (C) 5 
  • (D) 10

46. The number of diagonals of a hexagon is

  • (A) 3 
  • (B) 4 
  • (C) 5 
  • (D) 10

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