What is the measure of angle GFH?

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.