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8th Grade > Mathematics

PRACTICAL GEOMETRY MCQs

Total Questions : 56 | Page 6 of 6 pages
Question 51.


What is the last step in constructing quadrilateral with 3 sides and 2 included angles given?


  1.     Draw line segment
  2.     Draw arc
  3.     Construct triangle
  4.     None of these
 Discuss Question
Answer: Option A. -> Draw line segment
:
A

Suppose, we have to draw a quadrilateral. The length of three given sides are 'a' units, 'b' units and 'c' units. The measure of two given angles is α and β
The first step is to construct a line segment AB = 'a' units. Taking AB as the base, we construct a line making an angle α with the line segment AB. We cut the line by an arc of length 'b' units taking B as center and mark point where arc cuts the line as C.
Taking BC as the base, we construct a line making an angle β with the line segment BC. We cut the line by an arc of length 'c' units taking C as center and mark point where arc cuts the line as D. 
The final step is to join A and D to complete the quadrilateral ABCD.


Question 52.


Suppose you are asked to construct a square having side length 'a' units. This information is enough to construct a square. 


  1.     True
  2.     False
  3.     Triangle
  4.     None of these
 Discuss Question
Answer: Option A. -> True
:
A

As all the sides are equal and all the angles measure 90 degrees in a square, the given information is enough to construct a square.


Question 53.


With Which Of The Following Given Measurements, A Unique Kit...
With which of the following given measurements, a unique Kite named EASY can be formed?


  1.     EA = 5 cm, AS = 7 cm and EAS = 115
  2.     EA = 7 cm, AS = 12 cm and ES = 22 cm
  3.     AS = 3 cm, EY = 7 cm
  4.     ES = 15 cm and EAS = 120
 Discuss Question
Answer: Option A. -> EA = 5 cm, AS = 7 cm and EAS = 115
:
A and B

A Kite is a quadrilateral in which both the adjacent sides are equal to each other. Also, one of the opposite angles is equal. Therefore, to construct a Kite, length of two unequal sides must be given. Also, the length of the diagonal or the measure of any one of the angles must be given. 


Question 54.


While constructing quadrilateral PQRS with 3 sides and 2 diagonals which of the following geometric tool is not used?


  1.     Ruler
  2.     Protractor
  3.     Compass
  4.     Divider
 Discuss Question
Answer: Option B. -> Protractor
:
B

3 sides and 2 diagonals of a quadrilateral is known. This information is enough to construct a quadrilateral. Thus, a protractor is not necessary for the construction because no angles are measured or drawn during construction.


Question 55.


When we start constructing a quadrilateral whose 2 diagonals and 3 sides known, in how many ways can the construction be started.


  1.     1
  2.     2
  3.     3
  4.     4
 Discuss Question
Answer: Option B. -> 2
:
B

To construct a quadrilateral, we need to construct two triangles. As, both the diagonals are known, we can construct any of the two triangles first. Thus, there are two ways to start this construction.


Question 56.


Which of the following geometric apparatus is used to make two line segments meet when their lengths and one point in each line segment is known?


  1.     Compass
  2.     Protractor
  3.     Divider
  4.     Set Square 
 Discuss Question
Answer: Option A. -> Compass
:
A

To make the two line segments meet, arcs are drawn and their intersection point is found. A compass is hence used.


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