Explain why ∠4 is equal to the sum of the measures of the two nonadjacent interior angles (angle 1 and angle 2).

what is the measure of angle 4?

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.