The figure shows a truss used in the construction of a building. The measure of ∠1 is 39°. Find the measure of ∠2.

Which of these choices show a pair of equivalent expressions?

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?