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Module Progress: Angles in Polygons (G8)

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Angles in Polygons (G8)

question 1 of 3 Grade: Eight - G8
question 1 of 3 Grade: Eight - G8

Q: Calculate the number of sides of a polygon whose sum of interior angles is 900°.

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First, A ∪ B = {0,2,3,4,5,6,8,10}. C = {factors of 10} = {1,2,5,10}. C' = E - C = {0,3,4,6,7,8,9}. Then (A ∪ B) ∩ C' = {0,2,3,4,5,6,8,10} ∩ {0,3,4,6,7,8,9} = {0,3,4,6,8}.

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Did You Know?

First, A ∪ B = {0,2,3,4,5,6,8,10}. C = {factors of 10} = {1,2,5,10}. C' = E - C = {0,3,4,6,7,8,9}. Then (A ∪ B) ∩ C' = {0,2,3,4,5,6,8,10} ∩ {0,3,4,6,7,8,9} = {0,3,4,6,8}.

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