Copy of Reflection 7 Mrs. T
Explore Reflection investigation
You are given two triangles- the blue triangle is the pre image
the red triangle is the Image of reflection
Questions to explore :
1) What happens if you change the coordinates of the blue triangle (pre image) to A (3,4) C(5,2) B(4,8)? What are the coordinates of the image (red triangle) if you reflect across the x axis? The y axis?
Check your answers by checking on the boxes beside the diagram to explore one time across the X-axis and another time across the Y-axis.
3)What did you notice about the distance between the point A and Y-axis and the distance between point A' AND the Y-axis ?
4) Choose your own coordinates for the pre image (blue triangle). Predict where you think the coordinates will be for the image (red triangle) after a reflection over the x axis. Where do you think the coordinates will be after a reflection over the y axis?