All you need to do is plot the point they meet at
Answer:
Step-by-step explanation:
(Vertical angles)
(Measure of minor arc is equal to the measure of it's corresponding central angle)

You can name Plane P, many different ways,
Assuming you are asking this out of a textbook staring at a figure of a Parallelogram, their are probably points inside that shape and the way you would name it would be naming using any three points in the plane that are NOT on the same line in any order. <span />
Answer:
72 degrees
Step-by-step explanation:
180-108=72
where I got 180: a supplementary angle is 180 degrees