Which formula would be used to find the measure of
angle 1?
1/2 (aº + bº).
1/2(a-cº).
1/2 (b° +cº).
1/2(aº – bº).

The formula that would be used to find the measure of angle 1 will be

m<1 =12(a - b)

To get the measure of angle 1, the circle theorem below will be used as shown:

The angle at the vertex of the circle is equal to half of the difference of the intercepted arc.

The formula that would be used to find the measure of angle 1 will be

m<1 =12(a - b)

Learn more on circle theorem here: link

Check the picture below.

to have more of what you want like money

step-by-step explanation:

save it by not spending on unnecessary stuff and have more

linear pair postulates