Students will start by being reminded about the definitions of the types of symmetry.

There is a link to the Sketchpad activity on the Translation page, but not to the questions below.

Students may wish to just explore the Geometry Sketchpad site first before getting a list of questions. There are a few suggestions on the SKETCH, but the list of questions below is more leading for those students who need more guidance.

Questions and Answers:

1a) What happens to the green polygon when you move point S? *The
green polygon move the same distance and direction as point S is moved.*

b) How are the black and green polygons related? *The green polygon
is a translation of the black polygon by vector RS.*

2a) What happens when the Blue Angle gets bigger or smaller? *The
blue polygon moves.*

b)How are the black and the blue polygons related? *The black polygon
is rotated through the Blue Angle to the blue polygon.*

3a) What happens when the Red Angle gets bigger or smaller? *The red
polygon moves.*

b)How are the blue and the red polygons related? *The blue polygon
is rotated through the Red Angle to the red polygon.*

4) What happens when the red and blue lines are parallel? *The red
polygon (the second reflection) looks like a translation.*

5) How are translation and reflection related?* A translation is like
a double reflection through parallel mirrors.*

6) What happens when the red and blue lines intersect? *The red polygon
(the second reflection) looks like a rotation.*

7) How are reflection and rotation related? Reflections through intersection mirrors is like a rotation about the intersection point.