please be patient] $\,\angle 1\,$ and $\,\angle 2\,$ are vertical angles, then $\,m\angle 1 = m\angle 2\ $. DEFINITION parallel lines. Two lines are parallel if and only if they lie in the same plane and do not intersect. Parallel lines are studied in more detail in a future section, Parallel Lines. The symbol â$\,\parallel\,$â is used to denote parallel lines.
Types of Rate Control Drugs. There are three types of rate control medications: 1  Beta Blockers, which slow the heart rate and relax the blood vessels. 2  Examples include Atenolol (Tenormin Â®), Carvedilol (Coregâ¢), Metoprolol (Toprol XLâ¢, Lopressor Â®), and Sotalol (Betapace Â®).
It is critically important that persons with heart failure take their medications as directed by their healthcare provider (doctor, nurse practitioner, etc) to optimize the benefits of these drugs in the treatment of heart failure.iuretics. (Also known as Water Pills). Commonly prescribed include: 1  Furosemide (Lasix). 2  Bumetanide (Bumex). 3  Torsemide (Demadex). 4  Chlorothiazide (Diuril). 5  Amiloride (Midamor Chlorthalidone (Hygroton). 6  Hydro-chlorothiazide (Esidrix, Hydrodiuril).