Tag: construction related to lines

Questions Related to construction related to lines

The number of independent measurement required to construct a triangle is -

  1. $3$

  2. $4$

  3. $6$

  4. $2$


Correct Option: A
Explanation:

Ans- Three measurements are necessarily required to construct a triangle.

 Whether it can be measurements of all three sides,or all three angles or both

The triangle formed by AB = 3 cm BC = 5 cm AC = 9 cm is__

  1. An equilateral triangle

  2. An isosceles triangle

  3. A scalene triangle

  4. None of these


Correct Option: C
Explanation:
Given,  
In $\Delta ABC$  
AB=3cm, BC=5cm and AC=9cm.
Since all sides of triangle ABC are different. So $\Delta$ ABC is a Scalene triangle.

When constructing an inscribed regular hexagon, how will you choose the arc measurement?

  1. radius of the circle

  2. diameter of the circle

  3. chord of the circle

  4. circumference of the circle


Correct Option: A
Explanation:

When constructing an inscribed regular hexagon in a circle, we choose radius of the circle as a arc measurement.

The measure of maximum possible exterior angle in a regular polygon is 

  1. $70^o$

  2. $60^o$

  3. $90^o$

  4. $120^o$


Correct Option: D
Explanation:
Exterior angle of regular polygon = 180-interior angle
exterior angle is maximum when interior angle is minimum.
And we have minimum interior angle for regular triangle that is 60 degree..
So maximum exterior angle will be 180-60=120
So correct answer is Option D

To construct a quadrilateral minimum of its _________ elements are required.

  1. $3$

  2. $4$

  3. $5$

  4. $2$


Correct Option: C
Explanation:

To construct a unique quadrilateral, we will be need a minimum of $5$ dimensions.

If we have five dimensions, we can draw a side first then mark angle on both ends then we can construct a quadrilateral uniquely.
Or if we have three sides and two included angles then also we can construct a unique quadrilateral.
Unless we are constructing any one of the special quadrilaterals.

How many equal parts you will cut the circle to draw inscribing hexagon?

  1. $4$

  2. $5$

  3. $6$

  4. $7$


Correct Option: C
Explanation:

Hexagon is a $6$-sided polygon.
So we will cut the circle into $6$ equal parts.

Which tool will you use for cutting a circle into 6 equal parts?

  1. compass

  2. ruler

  3. protector

  4. divider


Correct Option: A
Explanation:

We will use compass tool for cutting a circle into $6$ equal parts.

While constructing a circle circumscribing and inscribing a regular hexagon, identify the statement true for the construction?

  1. circle outside and inside hexagon

  2. only hexagon is constructed

  3. only circle is drawn

  4. outside hexagon and inside circle


Correct Option: A
Explanation:

While constructing a circle circumscribing and inscribing a regular hexagon, the statement true for the construction is circle outside and inside hexagon.

State true or false:
A quadrilateral is uniquely determined if any four of its elements are known.

  1. True

  2. False


Correct Option: B
Explanation:

Above statement is false.

To construct a unique quadrilateral, we will be need a minimum of 5 dimensions.
If we have five dimensions, we can draw a side first then mark angle on both ends then we can construct a quadrilateral uniquely.

Or if we have three sides and two included angles then also we can construct a unique quadrilateral.
Unless we are constructing any one of the special quadrilaterals.

If the side of a regular hexagon is $6$ cm, then its area will be

  1. $108$ sq. cm

  2. $\dfrac {108}{3}$ sq. cm

  3. $108\sqrt {3}$ sq. cm

  4. $54\sqrt3$ sq. cm


Correct Option: D
Explanation:

$\Rightarrow$  Length of side of regular hexagon $(a)=6\,cm$

$\Rightarrow$  Area of regular  hexagon $=\dfrac{3\sqrt{3}}{2}a^2$

                                                 $=\dfrac{3\sqrt{3}}{2}\times (6)^2$

                                                 $=\dfrac{3\sqrt{3}}{2}\times 36$ 
                                 
                                                 $=54\sqrt{3}\,cm^2$