Theorem 3-8 states that in a plane, two lines perpendicular to the same line are parallel. explain why the phrase "in a plane" is needed. (hint: refer to a rectangular solid to you visualize the situation.)

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?