After careful thought and consideration, Jonny decided that the geometric shape was a triangle.  Before verbalizing his answer, he remembered Morton's clue to be very specific.  He finally decided on Isoceles Triangle.  He got it!  Bob rewarded him with any drink and candy of his choice from CVS.  He was then told to continue his treasure hunt at the Cold Stone ice cream shop, where Carol would be awaiting him with another clue.  Jonny made his way down the street to Cold Stone and arrived upon his 4th clue.  The clue was: