Given: ab and bc are tangents of d and the macd = 15. what is the measure of abc?

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?

An object in geometry with no width, length or height is a(n):

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.