but we're going to talk about reflective symmetry. If you draw a line down something and the two sides are a reflection of each other, you have found the line of symmetry, or the mirror line.

They all have vertical symmetry. This means you can draw a mirror line down through the middle of each shape and divide it into two reflected halves. Remember vertical means from top to bottom.

Ask "How many places do you think that the two points will meet? (The line of symmetry can be constructed as a set of overlapping blue and red points.) Have the students explore drawing continuous ...