In your group, choose three strong observations. Then, make a rule that can be used for all irregular polygons to find the sum of all the angles.(Devon, Casey, Trevor ideas)
Devon
-angle measure=180
-quad measure=360
-added 180 each time
1. (# sides x 180)- 360 Guess and Check!
2. (# of sides -2) x 180 When you change some get smaller and bigger--total same.
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