Theorem 3.11: if two lines are parallel to the same line, then they are paralel to each other if p parallel q and q parellel r, the p parellel r. note: the three parallel lines do not have to be in the same plane example: draw 3 parallel lines and label them.

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?