Civil Engineering Drawing Multiple Choice Questions on “Geometrical Construction”.
1. Which of the following is not a line segment?
a) Bamboo
b) Ruler
c) Laser beam
d) Pencil
Answer: c
Clarification: A line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints. A ray is a line with one end goes forever in the other direction. Here option Laser beam is ray and others are line segment.
2. The angle bisector bisects the angle exactly __________
a) Perpendicular
b) 60 degree
c) Half
d) Any ratio
a) One side
b) One angle
c) Two side
d) One angle and one side
4. Which of the property given below is false regarding a square?
a) A square is a particular case of a rectangle and a rhombus simultaneously
b) A square is a parallelogram with right angles and equal sides
c) The diagonals of a square cut at 90 degree
d) A square is a particular case of a rectangle only
5. If you are given only a compass and a ruler which angle is not possible to construct?
a) 37.5
b) 33.75
c) 40
d) 120
Answer: c
Clarification: It is not possible to construct an angle that is not a multiple of 15. Angle 40 is not a multiple of 15 while 120 is multiple of 15. Angle 37.5 is formed by angular bisector of angle 75 which is again a multiple of 15. Angle 33.75 is formed by bisecting angle 135 two times, is also a multiple of 15.
6. N number of circles are formed with a common centre, what is that geometry called?
a) Inscribed circle
b) Sphere
c) Circumscribed circle
d) Concentric circle
Answer: d
Clarification: Two or more circles with same centre and different radii, are termed as concentric circle. Inscribed circle is the largest possible circle drawn inside a polygon, each side of the polygon must be tangent to the circle, while a circle containing a polygon in its interior touching all vertices of a plane figure is called circumscribed circle.
7. What is the value of each angle of a regular hexagon?
a) 120
b) 135
c) 720
d) 108
Answer: a
Clarification: Sum of the interior angles of a regular polygon = (n – 2)*180, n= no. of sides
Of a regular hexagon = (6 – 2)*180 = 720
Each interior angles of a regular polygon = sum of interior angle/no. of sides
= 720/6 = 120.
9. If X is a point on AB and A – X – B (X is between A and B), then AB =?
a) AX + XB
b) AB – XB
c) AB – XA
d) AX – XB
Answer: a