The 4 interior angles of any 4 sided quadrilateral add up to 360 degrees
The third angle is 34.5 degrees
The third angle is (128 degrees) minus (the second angle).
180-105-32 = 43 The third angle measures 43 degrees
25 degrees
180o - 100o - 40o= 40o=====
The third angle measures 18 degrees.
The third angle is 34.5 degrees
The third angle is (128 degrees) minus (the second angle).
77 degrees
105
180-105-32 = 43 The third angle measures 43 degrees
45 degrees.
25 degrees
The missing angle measure is 100 degrees.
180o - 100o - 40o= 40o=====
63
90 degrees