Question

Fill in the blanks :-
1. A/An________ figure that has no line of symmetry but shows rotational symmetry of order 1.
2. For a Regular polygon the number of lines of symmetry is ____________its order of rotational symmetry.
3. Rotation by__________is called a half rotation.
4. Order of rotational symmetry of an asymmetrical figure is ____________ .​

Answer 1

Step-by-step explanation:

1. A parallelogram is a quadrilateral which has no line of symmetry but a rotational symmetry of order.
2. Symmetries in regular polygons You can see that there are seven lines of symmetry, and the regular heptagon also has rotational symmetry order seven. The order of rotational symmetry and the number of lines of symmetry of any regular polygon is equal to the number of sides.
3. A quarter turn means a rotation of 90° A half turn means a rotation of 180° A full turn means a rotation of 360°