Scaling Practice

# scale :: (Numberscale-factor, Imageimage-producing-expression) -> Image

Similar traingles ABC and DEF. AB=12. AC=8. DE=20. DF=30

The class was given an assignment to generate triangle DEF by scaling triangle ABC.

Jourdan wrote: scale(1.5, ABC)
Roux wrote: scale(30 / 12, ABC)
Zuni wrote: scale(8 / 20, ABC)
Cedric wrote: scale(30 / 20, ABC)
Josie wrote: scale(2.5, ABC)
Celine wrote: scale(20 / 8, ABC)

1 Whose expressions will work?

2 How do you know?

3 Which one would you use and why?

two bikes labeled bike and BIKE. bike is labeled 8 on the crossbar and 5 on the vertical bar. BIKE is labeled 19.2 on the crossbar and 12 on the vertical bar.

4 Write at least two expressions for generating the image titled BIKE by scaling bike.

These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, 1738598, 2031479, and 1501927). Bootstrap by the Bootstrap Community is licensed under a Creative Commons 4.0 Unported License. This license does not grant permission to run training or professional development. Offering training or professional development with materials substantially derived from Bootstrap must be approved in writing by a Bootstrap Director. Permissions beyond the scope of this license, such as to run training, may be available by contacting contact@BootstrapWorld.org.