Shape | Centre of Rotation | Order of Rotation | Angle of Rotation |
---|---|---|---|
Square | |||
Rectangle | |||
Rhombus | |||
Equilateral Triangle | |||
Regular Hexagon | |||
Circle | |||
Semi-circle |
The given table can be completed as follows.
Shape | Centre of Rotation | Order of Rotation | Angle of Rotation |
---|---|---|---|
Square | Intersection point of diagonals | \(4\) | \(90\degree\) |
Rectangle | Intersection point of diagonals | \(2\) | \(180\degree\) |
Rhombus | Intersection point of diagonals | \(2\) | \(180\degree\) |
Equilateral Triangle | Intersection point of medians | \(3\) | \(120\degree\) |
Regular Hexagon | Intersection point of diagonals | \(6\) | \(60\degree\) |
Circle | Centre | Infinite | Any degree |
Semi-circle | Centre | \(1\) | \(360\degree\) |
Write equations for the following statements:
(i) The sum of numbers x and 4 is 9.
(ii) 2 subtracted from y is 8.
(iii) Ten times a is 70.
(iv) The number b divided by 5 gives 6.
(v) Three-fourth of t is 15.
(vi) Seven times m plus 7 gets you 77.
(vii) One-fourth of a number x minus 4 gives 4.
(viii) If you take away 6 from 6 times y, you get 60.
(ix) If you add 3 to one-third of z, you get 30