A regular star is equilateral and has congruent angles at the vertices and congruent angles at each indentation. Given the following examples of regular stars, give a rule for the number of lines of symmetry in a regular star. In two or more complete sentences, justify the rule.

Efficient homemakers ltd. makes canvas wallets and leather wallets as part of a money-making project. for the canvas wallets, they need two yards of canvas and two yards of leather. for the leather wallets, they need four yards of leather and three yards of canvas. their production unit has purchased 44 yards of leather and 40 yards of canvas. let x be the number of leather wallets and y be the number of canvas wallets. draw the graph showing the feasible region to represent the number of the leather and canvas wallets that can be produced.