Today we started on new unit that will continue for 6 blocks.

We are learning about rigid transformations, both with or without the coordinate plane.

Today we created a graphic organizer of notes for this unit and did two investigations.

New ideas: If you connect corresponding vertices of mirror images with straight segments, the reflection line will be the perpendicular bisector of those straight segments.

If you take the vertices of a polygon in the coordinate plane and change the signs of the x-coordinates, the polygon will reflect across the y-axis. Change the sign of y: reflect across x.

Change both signs: rotate 180 degrees. Switch y and x: reflect across y=x.

All other new content should be in the graphic organizer.

HW #1 (due next block): p 362: 1-4, 6, 12-14, 16; p 370: 1-3,5,7-8.

If graph paper is required, you can use the back of the page handed out in class OR just "google" pdf graph paper and print a page of the first thing that pops up. Square dot paper can be found the same way. However, problems 4 & 6 can just be done on graph paper as well.