In the following diagram DF and EF are chords in Circle O and DOE is a central angle.   If the measure of arc DF is 150 and the measure of arc EF is 140, find the measure of DOE.

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
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ChapterP: Preliminary Concepts
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In the following diagram DF and EF are chords in Circle O and DOE is a central angle.

 

If the measure of arc DF is 150 and the measure of arc EF is 140, find the measure of DOE.

E
F
Transcribed Image Text:E F
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