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Mathematics 15 Online
OpenStudy (anonymous):

Kite DCFE is inscribed in circle A shown below. If the measure of DEF is 266°, what is the measure of ∡DEF?

OpenStudy (anonymous):

OpenStudy (mertsj):

Do you mean "if the measure of arc DEF is 266"?

OpenStudy (anonymous):

yes

OpenStudy (mertsj):

Well, if arc DEF is 266 degrees, then the measure of arc DF must be 360-266 or 94 degrees. An inscribed angle is 1/2 its arc. Do angle DEF must be 1/2 of 94 or 47

OpenStudy (anonymous):

thank you again ur a big help and like how u explain things

OpenStudy (mertsj):

yw

OpenStudy (anonymous):

Great job @Mertsj - way to be appreciative @sunsetlove !

OpenStudy (anonymous):

Great explanation!

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