what is the quadrilateral that the slopes of its adjacent sides are reciprocals but the slopes of the diagonals aren't?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.