Link: https://www.geogebra.org/classic/nMYQWf2F

Instruction:

(1) Set the Scale factor to 1, compare the sizes of the image and the preimage.

(2) Set the Scale factor to 0.5, compare the sizes of the image and the preimage.

(3) Set the Scale factor to 1.5, compare the sizes of the image and the preimage.

Link: https://www.geogebra.org/classic/bFPhxGg9

Instruction:

(1) In the upper left select the 'Angle Measures' box

(2) Change the values of A, B, and C. Explain how A',B'. and C' are affected as you make these changes.

(3) Do you think the sides lengths affect the angles in similar shapes?