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 />
Obtuse angles are more than 90° and less than 180°
A circle is 1 revolution or 360 degrees. So, the probability that a dart <span>will land in the unshaded region is
</span>
The answer is
67%.
