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Mathematics 15 Online
OpenStudy (anonymous):

Find the perimeter of the triangle at the right. Assume that the line segments are tangent to the circle.

OpenStudy (anonymous):

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

@MathLegend

jimthompson5910 (jim_thompson5910):

if you cut the figure up like this |dw:1353204276912:dw|

OpenStudy (anonymous):

mmmhhhmmm

jimthompson5910 (jim_thompson5910):

you'll see that 2 triangles form

OpenStudy (anonymous):

yes

jimthompson5910 (jim_thompson5910):

namely, the smaller triangles inside the larger ones

jimthompson5910 (jim_thompson5910):

highlighted here|dw:1353204485777:dw|

OpenStudy (anonymous):

ohk

jimthompson5910 (jim_thompson5910):

so if we know this |dw:1353204546161:dw|

jimthompson5910 (jim_thompson5910):

then we can say this as well |dw:1353204577254:dw|

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