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anonymous
 one year ago
i'll medal and fan for some trig help :)
anonymous
 one year ago
i'll medal and fan for some trig help :)

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johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.0Whatcha need help with? :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hi! @johnweldon1993 I'm reviewing for my final for my summer course but misplaced my notes on internal and external angles and have a couple questions about it

johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.0No problem...ask away ^_^

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so im trying to find the sum of interior angles of a decagon, and if im remembering correctly, the formula is (n2)180 n being the number of sides

johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.0Correct :) And since we know that a decagon has 10 sides, we just replace 'n' with 10 and evaluate

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0soooo (102)180 > (8)180=1440?

johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.0Correct indeed :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok, i have a couple more questions is that ok? :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so if each exterior angle is 12 degrees, how many sides does the polygon have? I forget this formula :(

johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.0Well we can remember the formula in the sense that ALL polygons have exterior angles that add to 360 So in order to find out how many sides we can use the fact that \[\large \frac{360}{\text{number of sides}} = \text{length of each side}\]

johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.0Did that make sense? :)

johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.0Sorry, should have said "measure of each exterior angle" as opposed to "length of each side" kinda confusing context there...sorry about that
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