**TI92P*maine1.Rellipse1„¥Z*GSP4„æ†MThis sketch was created with a newer version of Sketchpad and cannot be read.This sketch was created with a newer version of Sketchpad. Some information may be lost. The sketch will be opened as untitled."èÞfN°M  ÐÕÿõÿü@‘–`3PAÖ™@U@p ÐÕÿý@‘–`3PBÖ™@0@p Ð Ò Ð?  Ò Ð ÒÓ ?ÿ4teCw‡`Õ@‘–`3PCÖ Ð Ò ÐÕÿþ@‘–`3Pf2Ö™@@B Ð Ò Ð Ò ÐÕÿñÿü@‘–`3Pf1Ö™@T@E Ð Ò Ð- Ò Ð Ò Ð Ò Ð - Ò Ð> ÒÓ>œ"  "Õ@‘–`3PMove CÖ Ð>  Ò  ¢(Õ@‘–`3P Hide CirclesÖ Ð>  Ò   (Õ@‘–`3P Show CirclesÖ ÐÄüCºAs C moves, AC+CB is constant (AB). Circles around f1 and f2 have radii AC and CB. Thus the sum of the distances from the intersections of these circles to their two centers is constant.°Ö˜CÝV Ð(üY!What happens as you drag point C?Ö˜YÏb釅GSPøœ