Twice a number added to four is the same as one subtracted from the number what number is it ?

2n + 4 = 1 - n

n = -1

we know that

1) the inscribed angle measures half of the arc it comprises.

so

m∠dgf= > expression

2) the opposite angles in an inscribed quadrilateral are supplementary angles

so

m∠dgf=

m∠dgf=°

substitute in the expression to find the value of arc ef

therefore

the answer is

the measure of the arc ef is

tbh idk i hope this heples

step-by-step explanation:

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