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.
pro communist jews were arrested for spying, accused for leaking atomic bomb information. soon executed, first americans to be executed for espionage during cold war. McCarran act made it against the law to be communist in america or to be part of a communist party in america