this post was submitted on 24 Aug 2024
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The scaled down rectangle should be narrower; it's not scaled in this diagram, it's squished.
(Yes I know you can 'scale' objects on one axis but that's usually not how it's taught on an introductory level. Standard scaling assumes object similarity, which is not present in the diagram's 'scaled' rectangle.)
No, I wod say scaling is any diagonal matrix and thus even includes mirroring.
Cool, now explain that to a class of 7th graders for me
edit: raised grade, it may been set a low but it varies. I think most kids start to learn this stuff in/around middle school
edit 2: also mirrored objects are generally considered similar so that's fine