45. The number of diagonals of a septagon is
- (A) 13
- (B) 14
- (C) 15
- (D) 10
44. The number of diagonals of an octagon is
- (A) 14
- (B) 24
- (C) 15
- (D) 20
43. A polygon of six sides is called a
- (A) Quadrilateral
- (B) Pentagon
- (C) Hexagon
- (D) Heptagon
42. A polygon of seven sides is called a
- (A) Quadrilateral
- (B) Tetradecagon
- (C) Hexagon
- (D) Heptagon
41. A polygon of eight sides is called a
- (A) Octagon
- (B) Tridecagon
- (C) Hexagon
- (D) Heptagon
40. A polygon of nine sides is called a
- (A) Nonagon
- (B) Dodecagon
- (C) Hexagon
- (D) Heptagon
39. A polygon of ten sides is called a
- (A) Decagon
- (B) Hendecagon
- (C) Hexagon
- (D) Heptagon
38. A triangle with all its sides of unequal lengths is called a
- (A) Scalene triangle
- (B) Right-angled triangle
- (C) Acute angled triangle
- (D) Obtuse angled triangle
37. An angle of 0° is a/an
- (A) Right angle
- (B) Acute angle
- (C) Obtuse angle
- (D) None of these
36. An angle greater than 180° and less than a complete angle is called
- (A) Straight angle
- (B) Reflex angle
- (C) Obtuse angle
- (D) Complete angle
35. How many right angles are there in the following figure?
- (A) 3
- (B) 4
- (C) 5
- (D) 10
34. In the following figure, BCDE is a square and a 3D shape has been formed by joining point A in space with the vertices B, C, D and E. What is the name of the 3D shape?
- (A) Triangular pyramid
- (B) Square pyramid
- (C) Triangular prism
- (D) Square prism
33. In the following figure, BCDE is a square and a 3D shape has been formed by joining point A in space with the vertices B, C, D and E. How many vertices are there in this figure?
- (A) 3
- (B) 6
- (C) 5
- (D) 4
32. In the following figure, BCDE is a square and a 3D shape has been formed by joining point A in space with the vertices B, C, D and E. How many edges are there in this figure?
- (A) 8
- (B) 6
- (C) 9
- (D) 7
31. In the following figure, BCDE is a square and a 3D shape has been formed by joining point A in space with the vertices B, C, D and E. How many faces are there in this figure?
- (A) 3
- (B) 6
- (C) 5
- (D) 4