I need both of these answers best answer gets a BRAINLIEST!

Me ! write an equation for the interior angles of this triangle that uses the triangle sum theorem

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.