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Mathematics 7 Online
OpenStudy (anonymous):

http://static.k12.com/eli/bb/811/7537/0/2_36627_44211/7537/82f838899777dd887ab22867743c16071a3c95d3/media/0d509425c34a8b1fc1617af75b12d3733ce90a6b/mediaasset_649583_1.gif @tstudent02 what is the measure of side E

OpenStudy (anonymous):

how do i find it

OpenStudy (amistre64):

well thats a nightmare, should come with a warning sign ..

OpenStudy (amistre64):

how many corners do we have?

OpenStudy (amistre64):

there should be a formula of thrm that says something to the effect, the number of corners, minus 2; multipled by 180, gives the sum of the angles of a convex (?) polygon

OpenStudy (amistre64):

a triangle, has 3 corners, 3-2 = 1, and 1(180) is the sumof its angles a rectangle, has 4 corners, 4-2 = 2, and 2(180) = 360, then sum of its angles

OpenStudy (amistre64):

corners, sides, the numbers the same sum of angles = 180(n-2)

OpenStudy (anonymous):

ok so is n the number of angles

OpenStudy (anonymous):

it has 9 sides @amistre64

OpenStudy (amistre64):

then its alot of adding, but its all linear so its simple all the angles add up to 180(9-2)

OpenStudy (amistre64):

if i added correctly, and i seldom do, the sum of the angles is 55x - 5 = 1260 and E = 7x+9

OpenStudy (anonymous):

thanks as always your such a great help !!!

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