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Mathematics 19 Online
OpenStudy (anonymous):

What is the value of x in the figure below?

OpenStudy (anonymous):

OpenStudy (anonymous):

|dw:1351777585808:dw| Supplementary angles always add up to 180 degrees. SO 180 - 126 = x

OpenStudy (anonymous):

so its 54

OpenStudy (anonymous):

@jazy

ganeshie8 (ganeshie8):

u familiar with inscribed angle ?

OpenStudy (anonymous):

I would say it is 54. Then again, I don't know if you have to do something more advanced for your class.

OpenStudy (anonymous):

@jazy i got 54 but thats not one of my answer chocies these are 12° ,42° ,138° ,276° so idk if i should just pic 42

OpenStudy (anonymous):

@ganeshie8 no im not

ganeshie8 (ganeshie8):

u can pick something if all u want is to put something

OpenStudy (anonymous):

i actully want to understand how to solve this question

ganeshie8 (ganeshie8):

to solve the problem u need to know two things : 1) inscribed angle 2) triangle sum property

ganeshie8 (ganeshie8):

|dw:1351780066015:dw|

ganeshie8 (ganeshie8):

that 100 is called 'central angle'

ganeshie8 (ganeshie8):

'central angle' is the angle an arc makes at the center

ganeshie8 (ganeshie8):

so, whats an inscribed angle is ?

ganeshie8 (ganeshie8):

|dw:1351780204400:dw|

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