Question

What is the measure for the following ∠?
m∠AOX

20
40
60

Answer 1

80 degree

Explanation:

To find the measure of angle AOD, we look at the measure of angles XOA and XOD

From the given figure

m<XOA= 40 degree

m<XOD= 120 degrees

To get the angle measure of AOD , we subtract the angles

m<AOD=m<XOD- m<XOA

`120- 40 = 80`

So the m<AOD = 80 degrees

Answer 2

m∠AOX = 40°

Explanation:

If you look at A in the diagram, you can see the 40° beneath it, denoting that ∠A is 40°. When written as ∠AOX, this means "the angle that connects line A and line X at point O." This is to specify that angle A is ∠AOX and not m∠AOZ or m∠AOW or something. It's just a specification.