These are Transformations:
|After any of those transformations (turn, flip or slide), the shape still has the same size, area, angles and line lengths.|
The other important Transformation is Resizing (also called dilation, contraction, compression, enlargement or even expansion). The shape becomes bigger or smaller:
Congruent or Similar
When one shape can become another using only Turns, Flips and/or Slides, then the two shapes are Congruent.
Two shapes are Similar when we need to Resize for one shape to become another (we may also Turn, Flip and/or Slide).
So, when one shape can become another using transformation, the two shapes might be Congruent or just Similar
|When one shape becomes another ...||The shapes are ...|
|... using only Rotate, Reflect and/or Translate||
|... using a Resize (may also Rotate, Reflect