Someone please help!!

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking