Jan 31st transformational geometry text & sketchpad

2D Transformational Geometry

1. Translation (Slide)
2. Reflection (Flip)
3. Rotation (Turn)

Complete Do You Remember pg.227 Q1-9

Today's work:

On your netbooks, go to Numeracy and open Geometer's Sketchpad.  Plot triangle with the following coordinates A(3,4)  B(1,1)  C(5,1)

• translate (slide) triangle ABC 5 units left, 3 units down; plot new triangle & new coordinates

• reflect (flip) triangle ABC in y-axis (vertical) and in x-axis (horizontal); plot new triangle & new coordinates

• rotate (turn) triangle ABC counter-clockwise 180 degrees; plot new triangle & new coordinates