MYP Standard Mathematics Geometric Transformations Key Definitions

Two figures are congruent if they have the same shape and the same size.

A transformation that multiplies all distances from a center point by the same scale factor, producing a similar image.

A rule that maps every point of a figure to a new point, producing an image of the figure.

A transformation that preserves distances (and therefore preserves shape and size). Translations, rotations, and reflections are isometries.

The multiplier that compares corresponding lengths in an image and its pre-image under dilation.

Two figures are similar if corresponding angles are equal and corresponding lengths are in a constant ratio.