Question

What is the measure of arc EF? Picture in comments

Answer 1

I'm completely lost as of now. The lesson really doesn't show me anything.

Answer 2

Arc EF is cut off by the 25 degree angle with vertex at C.

The angle is an inscribed angle of a circle and has measure half of its intercepted arc.

So, if the angle is 25, then what is the measure of the arc? @maullom1

Answer 3

25 = (1/2)* arc EF

So, arc EF = ?

Answer 4

One sec

Answer 5

ok

Answer 6

I'm still confused. I'm really bad at this haha

Answer 7

Think about it this way. Half of what number equals 25.

Answer 8

12.5?

Answer 9

No. Half of 12.5 = 6.25.

What is the double of 25? 2*25 = ?

Answer 10

50. Thank you!

Answer 11

That is correct.

Answer 12

Here's the formula for the inscribed angle of a circle. in case you need it again.