In the following figure, if ∠ 1 = ∠ 5 and ∠ 3 = ∠ 7, then the lines l and m are _____.
In the figure, if lines l and m are parallel lines, then x =
Look at the following figure and fill in the blanks :
In the figure, l and m are the parallel lines and pis a transversal.
If ∠1=150°, then ∠3=………