The right triangle has one 90 degree angle and two acute (< 90 degree) angles. Since the sum of the angles of a triangle is always 180 degrees... y + z = 90 degrees. The two sides of the triangle that are by the right angle are called the legs... and the side opposite of the right angle is called the hypotenuse.
They were called the Hollywood 10 and accused of being communist. I don't think you would find many people who can name them all.
Watkins convicted for refusing to name other people that supported the communist group, court ruled that congress had overstepped boundaries by convicting, said congress oversight was limited to other branches of government and didnt extend to people's live, limited idea of legislative oversight and implied powers.