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Mathematics 14 Online
OpenStudy (anonymous):

perimeter of a polygon (39)

OpenStudy (anonymous):

|dw:1336212542268:dw|

OpenStudy (aravindg):

is the angle r90 degreee?

OpenStudy (anonymous):

the twelve one only has that symbol of 90 degrees

OpenStudy (callisto):

Isos. triangle?

OpenStudy (callisto):

lol, yes. |dw:1336212751676:dw| By Pyth Thm, \[a = \sqrt {13^2 - 12^2} = 5\]

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