Use the figure for Exercises 13-15. Find the measure of the given angle. 112°
430
33°
1710
b
15. C
13. a
14. b

a + 112 + 33 = 180 ( sum of interior angles of tria

or a + 145 = 180 - ngle is 180 degrees)

or a = 180 - 145

or a = 35 .

similarily,

c + 43 + 71 = 180

or c + 114 = 180

or c = 180 - 114

or c = 66 .

and ,

a + 71 + b = 180 ( sum of angles in straight line is or, 35 +71 + b = 180 180 degrees)

or , b + 106 = 180

or, b = 180 - 106

or, b = 74 .

Thank me later.

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9

what