Pentagons
In case you need some help getting the angles right, see this.
I misspoke in class earlier this week when I said the outer angles are 72 degrees. The inside angles when drawing lines from the center to each vertex are 72 degrees, the outer angles are 108 degrees.
2 comments:
so does that mean that everything should stay the same except for we should use (1-cos108) instead of (1-cos72)?
for number 9, yes, use 108 degrees everywhere instead.
for number 10, the length from a vertex to the center does use the 72 degree angle, so nothing changes on that one.
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