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Mathematics 18 Online
OpenStudy (anonymous):

What are the values of x and y in the diagram? A. x = 77° y = 93° B. x = 87° y = 83° C. x = 77° y = 83° D. x = 87° y = 93° http://static.k12.com/calms_media/media/1415500_1416000/1415912/1/600f73358cd59ced83be24634063ee6314f499bc/67528_FGA_U7_L3_V2_P.jpg I already added 67 + 36= 103 Now I'm confused

OpenStudy (anonymous):

Alright, what is the next step? Do I need to subtract, add or divide?

OpenStudy (ankitshaw):

sorry the formula is sum of angles = (n – 2)180° where n = number of sides..

OpenStudy (ankitshaw):

sum of angle = (n-1)180 , where n = number of sides. for triangle n = 3 ..

OpenStudy (ankitshaw):

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OpenStudy (anonymous):

180 but what about 63,112,102

OpenStudy (ankitshaw):

first solve the trigular part to find x then you can find y

OpenStudy (anonymous):

x is 77

OpenStudy (ankitshaw):

yes

OpenStudy (ankitshaw):

now put n=4 in the formula (n-1)180 , to find the sum of angles in the four sided polygon.. and do the same to find y.

OpenStudy (anonymous):

oh, that's where I'm kinda stuck

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