Question

Open your geometry box. There are some drawing tools. Observe them and complete the following table:

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 1

Name of the tool	Number of lines of symmetry
(i) The Ruler	Two
(ii) The Divider	One
(iii) The Compasses	Zero
(iv) The Protactor	One
(v) Triangular piece with two equal sides	One
(vi) Triangular piece with unequal sides	Zero

Explanation:

(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 protactor has a shape of semi-circle and a semi-circle has only one line of symmetry.

(v) Triangular piece with two equal sides

It has one line of symmetry.

(vi) Triangular piece with unequal sides