Q57 of 60 Page 136

A 45° - 45° - 90° set-square and a protractor have the same number of lines of symmetry.

True

A 45° - 45° - 90° set-square is an isosceles right angled triangle and thus has one line of symmetry. A protractor also has only one line of symmetry along the angle of 90°.


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55

A square and a rectangle have the same number of lines of symmetry.

 56

A circle has only 16 lines of symmetry.

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It is possible to draw two bisectors of a given angle.

 59

A regular octagon has 10 lines of symmetry.