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OpenStudy (cenaida):
Find the measure of angle CDE. A. 50 B. 65 C. 115 D. 130 http://roads.advancedacademics.com/contentserver/content/roadssection/279432/questions/assessments/t-introductiontrianglesquiz/geometry_unit_4_1_quiz_v3_14q.gif
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OpenStudy (anonymous):
c
OpenStudy (cwrw238):
2x - 15 = 50 + x
OpenStudy (cwrw238):
solve this for x this comes form the fact thta external angle of a triangle = sum of the 2 opposite internal angles
OpenStudy (cwrw238):
to find angle CDE plug x into 2x - 15
OpenStudy (cwrw238):
can you solve that equation?
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OpenStudy (cwrw238):
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