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Head First 2D Geometry by Dawn Griffiths, Stray

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T
his is the design
similarity and congruence
Liz wants you to etch her phone
Time to get to work. Liz has picked a design she loves for her
new cell phone, now all you have to do is engrave it on the back.
I really like
this design here
with the sunset…
isn’t it perfect?
Sketch before you etch! Copy the design Liz has chosen (it
doesn’t matter if its messy!) and think about what you’re paying
attention to when you copy.
What three things do you need to know about each line in order
to be able to sketch, and then etch, the design accurately?
1)
2)
3)
Sketch here
myPod-designs-(c) 2007
Liz chose.
you are here 4 51
sharpen solution
Sketch before you etch! Copy the design Liz has chosen (it
doesn’t matter if its messy!) and think about what you’re paying
attention to when you copy.
What three things do you need to know about each line in order
to be able to sketch, and etch, the design accurately?
1) How long each line is
2) What angle each line is at
3) Where the line is (what position it starts/ends)
When you sketch the design, you need to think about these things:
52 Chapter 2

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