4.  Fill in the blanks:

Shape     Centre of Rotation     Order of Rotation     Angle of Rotation
Square      
Rectangle      
Rhombus      
Equilateral Triangle      
Regular Hexagon      
Circle      
Semi-circle      

     

Answers (1)

The given table is completed as shown:

Shape     Centre of Rotation     Order of Rotation     Angle of Rotation
Square intersection point of digonals.         4   90 \degree
Rectangle Intersection point of digonals.          2   180 \degree
Rhombus Intersection point of digonals.          2

  180 \degree

Equilateral Triangle Intersection point of medians.          3    120 \degree
Regular Hexagon Intersection point of digonals.          6   60 \degree
Circle centre of circle          infinite   any angle
Semi-circle centre of circle               1    360 \degree

     

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