Head First 2D Geometry

this is a new chapter 49

He said we were very

similar, but I think really

he meant congruent!

similarity and congruence

2

Shrink to fit

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.