Answer:
Linear pair is a pair of adjacent angles formed when two lines intersect.
so,
and
are linear pairs.
Linear pairs are always supplementary.
therefore,
......[1]
Also, it is given in figure, 
Substitute in [1], we get;
Simplify:

Exterior- Angle sum Property states that if the measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles of the triangle.
then by Exterior angle sum property ;

Substitute the values given in the figure;

simplify;

therefore, the measure of angle ACB is, 
Answer:
the first graph is the answer
Step-by-step explanation:
A!!!
Answer:
jsjJHzhhzhahahahjsjsjsj hajajsjjsjsjsjjjsjajjajsjzjzjzjsjsjsjjsjsnsjsnjsjsn
B is the answer on ingenuity
Answer:
Rotation
Step-by-step explanation:
The figure appears to have been rotated 180 degrees about the origin.