Transformations

Reflection (flip)
1. Lines of symmetry 2D
2. Reflection in a line
  1. Image exactly the same size (Congruent)
  2. Changes orientation
  3. Lines are written as equations
3. Mirror Lines
4. Planes of symmetry 3D
Rotation (spin)
1. Around a point
  1. Changes orientation
  2. Image exactly the same size (Congruent)
  3. Direction and angle
  4. Points are written as Co-ordinates
2. Rotational symmetry
  1. Around the centre
    1. Order of rotational symmetry
Enlargement (dilation)
1. From a point (Centre of Enlargement)
  1. Orientation only changes on negative enlargements
  2. Scale factor
  3. Centres written as Co-ordunate
2. Can Change size (Similarity)
  Annotations:
  - Similar shapes have the same proportions and angles but can be larger or smaller
  1. Angle sizes remain constant
3. Fractions Reduce
4. Numbers bigger than 1 Enlarge
Translation (slide)
1. Orientation never changes
2. Vectors
  1. Top number moves across Bottom number up or down
3. Image exactly the same size (Congruent)

Resource summary

	Created by Trev Irvine over 10 years ago