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Mathematics 9 Online
OpenStudy (errinss):

uhm, help me? i'll fan and medal

OpenStudy (errinss):

OpenStudy (errinss):

@nincompoop @jim_thompson5910

jimthompson5910 (jim_thompson5910):

First let's focus on the red triangle (see attached) Triangle HEF

jimthompson5910 (jim_thompson5910):

segment FG and EH are congruent since we have a rectangle so EH is 5 cm long do you agree so far?

OpenStudy (errinss):

yup, lol i was reading the numbers backwards

jimthompson5910 (jim_thompson5910):

ok triangle HEF looks like this |dw:1465881026682:dw| this is looking down from a birds-eye view

jimthompson5910 (jim_thompson5910):

how long is segment HF? hint: pythagorean theorem a^2+b^2 = c^2

OpenStudy (errinss):

|dw:1465881072851:dw|

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