Prove that the lines \(l\) and \(m\) are parallel if the angles \(a = b = 48^{\circ}\).
Proof:
It is given that \(a = b = 48^{\circ}\).
Since angles \(a\) and \(b\) are , because \(a = b = 48^{\circ}\).
Thus, \(l\) and \(m\) are , and a transversal \(t\) that making angles \(a\) and \(b\).
Hence, proved.