High School geometers verify through experimentation certain properties about dilations. This multi-step problem challenges them to construct examples of dilations to verify specific facts, the final step provides an opportunity to more...

Proving triangles are similar is often an exercise in applying one of the many theorems young geometers memorize, like the AA similarity criteria. But proving that the criteria themselves are valid from basic principles is a great...

Explore transformations of a polygon that include: 1) translation 2) rotation 3) reflection and 4) dilation.

[Free Registration/Login Required] Students will adjust Frankenstien's face to explore dilation. Click learn more to watch a video and click challenge me to answer a practice question.

Students will discover properties of similar figures using the TI-89 and CABRI Geometry II to use dilations to dynamically manipulate figures.

This site offers an online multiple choice quiz on dilation. The site offers a link to a hint per question along with a the correct responses though the grading of the quiz.

Students use the Cabri Geometry II Plus software to invert, rotate and dilate a figure.

Architects and Interior Designers use scale drawings that represent the house or room they are designing. This activity uses Cabri Jr. Geometry software to create a scale drawing with dilations.