Define similarity in terms of transformations. Use transformations to determine whether two figures are similar.
Use congruence and similarity criteria for triangles to solve problems and to justify relationships in geometric figures.
Make sense of problems and persevere in solving them.
Construct viable arguments and critique the reasoning of others.
Model with mathematics.
Use appropriate tools strategically.
Attend to precision.
Look for and make use of structure.
Look for and express regularity in repeated reasoning.