What does the following expression mean? 7! А 7 + 6 + 5 + 4 + 3 + 2 + 1 B. 7.6.5.4.3.2.1​

answer: need a picture

step-by-step explanation:

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

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