Another Geography exam need help

If the basis of an isosceles trapezoid have lengths of 11 and 26, what is the length of the median?

What is the difference between the cultures of central asia and the caucasus region? the majority of people in central asia are muslim; the majority in the caucasus region are christian. the primary language in central asia is armenian; the primary language in the caucasus region is russian. central asia has been plagued by ethnic unrest; the caucasus region has had little ethnic conflict. the effects of soviet rule can still be seen in central asia; the caucasus region has developed its own identity since the fall of the ussr.

What is most often given a value of zero to describe an object’s position on a straight line? displacement reference point distance ending location