Similar Solids?

Drag the vertices of the solids you see below to make them SIMILAR. Be sure to use the "check" slider to test the accuracy of your setup afterwards.
Mathematically show how you know you created a pair of similar solids in the app above.
Create a set of SIMILAR SOLIDS with different dimensions from the one you made above. Use the "check" slider to test the accuracy of your setup afterwards.
Mathematically show how you know you created a pair of similar solids in the app above.

Information: Similar Solids?