Question

Arc Measure

Answer 1

O

Answer 2

?

Answer 3

Nvm

Answer 4

So remember that we said that the angle in the back is half of the arc?

Answer 5

Half?

Answer 6

The angle that we're looking for KLM is going to be equal to that arc

Answer 7

This time we have to double

because we know the angle and we're trying to find the arc

angle = 1/2 * arc

Answer 8

25.5

Answer 9

no no

the angle KNM is 51

51 = 1/2 * arc KM

what is KM = ??

Answer 10

51*.5?

Answer 11

51/.5?

Answer 12

I'm so confused??

Answer 13

you divide

51 = 1/2 * x

so to get x, you would multiply 2 on both sides

or another way to look at it would be

51 = 0.5 * x

you divide 0.5 on both sides to get x

51 / 0.5 = ??

It's the same thing

Answer 14

102?

Answer 15

There you go!

And since we're looking for angle KLM which is a central angle (that is, it's the angle that has a vertex with the center of the circle)

so that angle is going to be the same as the arc

Answer 16

Does that make sense?

Answer 17

It does, thank you. Sorry, I'm slow in math (:

Answer 18

No worries at all! It's my pleasure!! :)

Answer 19

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