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Gauss's first significant discovery, in 1792, was that a regular polygon of 17 sides can be constructed by ruler and compass alone.
CONSTRUCTIONS
Key questions
Can we use a protractor and ruler to construct shapes?
How do we construct a perpendicular bisector?
How do we construct an angle bisector?
What other compass constructions do we need?
What are loci?
5 lessons
Literacy
stories that set a frame or background
stories that accompany or intertwine
stories that introduce
stories that explain
stories that ask a question
stories that entertain
Extend...
loci and construction exam qus - 1,2,3,4,5
more exam questions - 2,3,4,5
even more exam questions - 2,3,4,5
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