Diameter BC is perpendicular to chord XY. Move chord XY by dragging X along the circle. [br]Note: the length of arcs CX and CY are shown, not their measures. [br][br]1. How are the lengths of arcs CX and CY related?[br][br]2. How are the lengths of XZ and YZ related?[br][br]4. When is XZ the longest? The smallest?