Symmetrical Designs

Symmetry means that one shape becomes exactly like another when you move it in some way: ____.

How many lines of symmetry does a regular heptagon have?

A plus sign ($+$) with equal arm lengths has ____ lines of symmetry.

The letter 'E' has a ____ line of symmetry.

Three identical circular coins are placed on a table so that each coin touches the other two coins. How many lines of symmetry does this arrangement of three coins have?

If the capital letter 'Z' is rotated clockwise by a $\frac{1}{4}$ turn, which other capital letter does it most closely resemble?

A design is created by drawing a square and then adding exactly one diagonal line from one corner to the opposite corner. How many lines of symmetry does this entire design (square plus one diagonal) have?

Three identical circles are arranged such that Circle A and Circle B touch each other at exactly one point, and Circle C is then placed so that its center is located exactly on that same touching point. How many lines of symmetry does this final arrangement of three circles have?

A design is made of a large square with a smaller square hole cut out from its center. The smaller square is rotated by $45^\circ$ relative to the larger square so that its corners point exactly toward the midpoints of the larger square's sides. How many lines of symmetry does this design have?

A square piece of paper is folded in half horizontally, and then folded in half vertically. If two separate holes are punched into the interior of the resulting smaller square (not touching any of the folded edges), how many holes will the paper have when it is completely unfolded?