Analyze the biconditional statement below and complete the instructions that follow. Two lines are perpendicular if and only if they form right angles. Express the given biconditional as the conjunction of two conditionals. A. If two lines are perpendicular, then they form right angles. If they form right angles, then the angle measures 90 B. If two lines are perpendicular, then they form right angles. If they form right angles, then they are perpendicular. C. If the angle formed by two lines measures 90, then the lines form right angles. If they form right angles, then the angle measures90 D. If two lines are perpendicular, then the angle measures90 . If they form right angles, then the angle measures 90