Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.
Are the figures similar?
Is one triangle a dilation of the other?
If so, where is the center of dilation?
I use the Class Capture feature of TI-Nspire Navigator to watch my students work.
Who has enough information to show whether one triangle is a dilation of another?
Whose work would you select for a whole class discussion?
Are the triangles similar?
How do you know?
(Of course we didn’t get to this one during class … but wouldn’t you always rather have too much to do rather than too little to do?)