Proving the sum of the Interior Angle Measures of a Triangle is 180

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )