In your respective groups, attempt the following questions.

1. Find the co-ordinates of the vertices of the image of a parallelogram whose vertices are A(3, 5), B(7, 5), C(5, 0) and D(l, 0) when rotated about the origin through:
   (a) -90°.
   (b) 180
2. A triangle whose vertices are A'(-1.5,-2.5), B'(-1.5,-1.5) and C(-3.5, -1.5) is an image of the triangle whose vertices are A(1.5,2.5), B(1.5, 1.5) and C(3.5, 1.5) under a rotation. Find:
   • 
     a) The centre and the angle of rotation.
   • (b) The image of points (0, 3), (2,2) and (0,0) under the same rotation.

3. Write down the images of the following points under rotation through 180° about the stated centres of rotation:
   • (3, -4) about (2,1) (ii) (4,5) about (3, 8).
   • (-5, 6) about (4,4) (iv) (4,-7) about (-3,2.