In the given figure, the dashed line are the lines of symmetry. Complete the pattern in the diagram. Write down the order of rotation of each of the patterns.

The line of symmetry can be defined as the axis or imaginary line that passes through the centre of the shape or object and divides it into two identical halves. So, the other half of the pattern will be identical to the given half. Therefore, the complete diagram is drawn below: The order of symmetry is the number of times the figure coincides with itself as its rotates through 360 ° . The number of times the figure coincides with itself as its rotates through 360 ° = 1 Therefore, the order of rotational symmetry is 1 . The other three parts of the pattern will be identical to the given part. Therefore, the complete diagram is drawn below: Now, The number of times the figure coincides with itself as its rotates through 360 ° = 2 Therefore, the order of rotational symmetry is 2 . Both the parts on the either sides of the dashed line or the line of symmetry will be identical. Therefore, the complete diagram is drawn below: Again, The number of times the figure coincides with itself as its rotates through 360 ° = 1 Therefore, the order of rotational symmetry is 1 .

Ali and Ritesh are trying to this pattern. The dashed line is the line of symmetry. This is what they draw. Ali: Ritesh: Who has drawn the correct diagram? Explain the mistake that the other person has made.

Given: The dashed line is the line of symmetry. A line of symmetry is a line that cuts a shape exactly in half. This means that if we were to fold the shape along the line, both halves would match exactly. Diagram drawn by Ali. In the diagram drawn by Ritesh the line of symmetry does not divide the diagram into two identical halves. If we were to fold the shape along the line, both halves would not match exactly. Diagram drawn by Ritesh. In the diagram drawn by Ali the line of symmetry divides the diagram into two identical halves. If we were to fold the shape along the line, both halves would match exactly. Ritesh has drawn the diagram correctly. Hence, the mistake made by Ali is that he did put a blue square in the proper place as shown above. So, if we fold the shape along the dashed line, both halves would not match exactly.