Given the following diagram, find the missing measure.

given:

m∠2 = 50°, m∠1 =

a. 40
b. 50
c. 90
d. 130

ps. the first the pictures go where it says above, given:

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer