Question
Open your geometry box. There are some drawing tools. Observe them and complete the following table:
S.No.
Name of the tool
Number of lines of symmetry
$i.$
The Ruler.
__________________
$ii.$
The Divider.
__________________
$iii.$
The Compasses.
__________________
$iv.$
The Protactor.
__________________
$v.$
Triangular piece with two equal sides.
__________________
$vi.$
Triangular piece with unequal sides.
__________________

Answer

$(i)$ Ruler:

It has two lines of symmetry.
$(ii)$ Divider:

It has one line of symmetry.
$(iii)$ Compass:

Since, both the sides of a compass are not identical. Therefore, it has no line of symmetry.
$(iv)$ Protractor:

Since, a protractor has a shape od semi-circle and a semi-circle has only one line of symmetry.
$​​​​​​​(v)$ Triangular plece with two equal sides:

$ (vi)$ Triangular piece with unequal sides:

Since, all the sides are unequal. Therefore, it has no line of symmetry.
S.No.
Name of the tool
Number of lines of symmetry
$i.$
The Ruler.
$2$
$ii.$
The Divider.
$1$
$iii.$
The Compasses.
$0$
$iv.$
The Protactor.
$1$
$v.$
Triangular piece with two equal sides.
$1$
$vi.$
Triangular piece with unequal sides.
$0$

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