If mDE = 39°, find the measure (in degrees) of the reflex angle that intercepts DBACE.

Question

Use the figure below to answer the question.

If mDE = 39°,

 find the measure (in degrees) of the reflex angle that intercepts DBACE.

Answer 1

If DE is 39 the m<DOE is 39 because it is a central angle. The reflex angle would be a central angle that measures the remainder of the circle of 360-39 = 321.