Question

If DBC = 40°,

then m CD = degrees

m BC = degrees

ECB = degrees

DCF = degrees

BDC = degrees

Answer 1

DBC is the inscribed angle.

Answer 2

The inscribed angle is always half the measure of the arc it cuts.

Answer 3

DBC cuts arc CD, therefore, the measure of CD will be twice the measure of DBC

Answer 4

m arcCD = twice mDBC

Answer 5

m arc CD = 2(40 degrees)
m arc CD = 80 degrees

Answer 6

so what are the other degrees