Name of the tool | Number of lines of symmetry |
(i) Ruler | .......................... |
(ii) Divider | .......................... |
(iii) Compasses | .......................... |
(iv) Protractor | .......................... |
(v) Triangular piece with two equal sides | .......................... |
(vi) Triangular piece with unequal sides | .......................... |
Answer:
By observing the geometry tools we find some important results. |
(i) In the ruler we can draw both horizontal and vertical lines. Hence in the ruler number of lines of symmetry is 2. |
(ii) In the divider we can draw only one line of segment for dividing. So in the divider number of lines symmetry is 1. |
(iii) In the compass we can-not draw any line of segment for dividing in each part. So in the compass number of lines of symmetry is 0. |
(iv) In the protractor we can draw only one line of segment for dividing in each part. So in the protractor number of lines of symmetry is 1. |
(v) In the triangular piece with two equal sides we can draw only one line of segment because there are two equal sides of triangle. Hence the line of symmetry is 1. |
(vi) In the triangular piece with unequal sides we can?t draw any line of segment because there is no equal sides of triangle. Hence the line of symmetry is 0. |
Name of the tool | Number of lines of symmetry |
(i) Ruler | 2 |
(ii) Divider | 1 |
(iii) Compasses | 0 |
(iv) Protractor | 1 |
(v) Triangular piece with two equal sides | 1 |
(vi)Triangular piece with unequal sides | 0 |
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