Name four points that would form a square with the origin at its center

The graph below could be the graph of which exponential function?

Me! #1 write an equation for the interior angles of this triangle that uses the triangle sum theorem. #2 what is the value of x? #3 what is the measure of #4 classify the triangle above as acute, obtuse, or right. state your reason in a complete sentence.

Need on this geometry question. explain how you did it.