Constructions CBSE Questions & Answers

Constructions

This is Mathematics Class 09 Constructions CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
A rotating ray after making a complete rotation coincides with its initial position. The angle thus formed is
  • A
    complete angle
    Correct
  • B
    straight angle
  • C
    right angle
  • D
    reflex angle
2
If two lines are parallel, the perpendicular distance between them
  • A
    none
  • B
    Remains constant
    Correct
  • C
    increases
  • D
    decreases
3
How many angles are formed by a transversal with a pair of lines?
Question 3 figure 1
  • A
    4
  • B
    6
  • C
    8
    Correct
  • D
    3
4
How many pairs of corresponding angles are formed when a transversal intersects a pair of lines?
  • A
    2 pair
  • B
    3 pair
  • C
    8 pair
  • D
    4 pair
    Correct
5
How many pairs of alternate angles are formed when a transversal intersects a pair of lines?
  • A
    2 pair
    Correct
  • B
    4 pair
  • C
    3 pair
  • D
    8 pair
6
Instruments used to draw a pair of parallel lines are
  • A
    set square and scale
    Correct
  • B
    none of these
  • C
    compass and scale
  • D
    protractor and scale
7
Example for a pair of parallel lines
  • A
    sides of a triangle
  • B
    none
  • C
    corners of a room
  • D
    stumps in cricket match
    Correct
8
Among the following, find the set of measures which can form triangle.
  • A
    \({45^0},{45^0},{80^0}\)
  • B
    \({65^0},{85^0},{30^0}\)
    Correct
  • C
    \({70^0},{90^0},{25^0}\)
  • D
    \({65^0},{85^0},{40^0}\)
9
A triangle divides the plane into____________parts.
  • A
    2
  • B
    4
  • C
    6
  • D
    3
    Correct
10
Can \({90^0},{90^0}\;and\;{10^0}\)form a triangle?
  • A
    No
    Correct
  • B
    None
  • C
    Yes
  • D
    Sometimes
11
Can 7 cm, 5 cm and 3 cm form a triangle?
  • A
    Yes
    Correct
  • B
    None
  • C
    Sometimes
  • D
    No
12
If lines AB, AC, AD and AE are parallel to a line m, then
  • A
    none of these
  • B
    A, B, C, D, E are non-collinear points
  • C
    A, B, C, D, E are collinear points
    Correct
  • D
    AB & AC are parallel and AD & AE are perpendicular
13
An angle greater than \({180^0}\) but less than \({360^0}\) is called
  • A
    an acute angle
  • B
    an obtuse angle
  • C
    reflex angle
    Correct
  • D
    right angle
14
If two parallel lines are intersected by a transversal, the bisectors of the interior angles form a
  • A
    parallelogram
  • B
    rhombus
  • C
    square
  • D
    rectangle
    Correct
15
The construction of a triangle ABC, given that BC = 6 cm, \(\angle B = {45^0}\) is not possible when difference of AB and AC is equal to :
  • A
    4.0 cm
  • B
    6.9 cm
    Correct
  • C
    5.2 cm
  • D
    5.0 cm