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Head First 2D Geometry by Dawn Griffiths, Stray

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2
similarity and congruence
Shrink to fit
He said we were very
similar, but I think really
he meant congruent!
Sometimes, size does matter.
Ever drawn or built something and then found out it’s the wrong size? Or made
something just perfect and wanted to recreate it exactly? You need Similarity and
Congruence: the time-saving techniques for duplicating your designs smaller, bigger,
or exactly the same size. Nobody likes doing the same work over—and with similarity and
congruence, you’ll never have to repeat an angle calculation again.
In your dreams. I’m
a half-inch taller
than you, shorty.
this is a new chapter 49

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