# 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

 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 $360 \degree$