Assume you have created a mechanical arm that can hold a pen. The arm can perform the following

tasks:

§ Lower the pen to a piece of paper.
§ Raise the pen from the paper.
§ Move the pen one inch along a straight line. (If the pen is lowered, this action draws a one-inch line from left to right; if the pen is raised, this action just repositions the pen one inch to the right.)
§ Turn 90 degrees to the right.
§ Draw a circle that is one inch in diameter.
Draw a structured flowchart or write pseudocode describing the logic that would cause the arm to draw the following:
a. a one-inch square
b. a two-inch by one-inch rectangle
c. a string of three beads