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Mathematics 21 Online
OpenStudy (anonymous):

m

OpenStudy (anonymous):

OpenStudy (anonymous):

help please

OpenStudy (unklerhaukus):

Can you see that is an isosceles triangle ?

OpenStudy (anonymous):

yes

OpenStudy (unklerhaukus):

oh, wait. we can't be sure D is in the middle, its not necessarily isosceles. sorry

OpenStudy (anonymous):

the middle is B

OpenStudy (unklerhaukus):

|dw:1369381335282:dw|

OpenStudy (unklerhaukus):

|dw:1369381381428:dw| with the aid of construction we have two isosceles triangles can you see them now?

OpenStudy (anonymous):

okay yes but wouldnt it be 180-25-25=130

OpenStudy (unklerhaukus):

|dw:1369381458399:dw|

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