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Mathematics 9 Online
OpenStudy (anonymous):

Could someone please help me with this problem? I will attach the problem. Thank you so much!

OpenStudy (anonymous):

OpenStudy (anonymous):

Angle 1 is C, right?

OpenStudy (anonymous):

@jacobrocket173

jimthompson5910 (jim_thompson5910):

angle 1 isn't C

jimthompson5910 (jim_thompson5910):

try breaking up the triangles FCE and DCE

OpenStudy (anonymous):

so each is 90 ??

jimthompson5910 (jim_thompson5910):

you'll see that the two triangles are congruent (use SSS)

OpenStudy (anonymous):

90-34?

jimthompson5910 (jim_thompson5910):

what is angle FCE

OpenStudy (anonymous):

I guess I don't know

jimthompson5910 (jim_thompson5910):

It's given to you

OpenStudy (anonymous):

OH! duh 34

jimthompson5910 (jim_thompson5910):

angle DCE is congruent to angle FCE because the triangles are congruent and we can use CPCTC

OpenStudy (anonymous):

FCE = 34 so DCE = 34

jimthompson5910 (jim_thompson5910):

yep, both are 34 degrees

OpenStudy (anonymous):

so <1 is DCE?

jimthompson5910 (jim_thompson5910):

yes

OpenStudy (anonymous):

Thank you very much!!

jimthompson5910 (jim_thompson5910):

np

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