BPW Inv 1.2 - Rotations
Open to page 13 in your BPW book or BPW online book link to Investigation 1.2
Rotate the star around a point by completing all steps below then screen shot the final images on to your Google doc.
- First choose a position on, inside or outside of the star you want to rotate around. You can make a point with
or choose an existing point. - Use the Rotate around Point tool
(go to 
then use drop down to find ) to rotate the star. - Click on rotate around point tool
- Then click in the middle of star (not on a point or line)
- Then click the point you created or chose in the first step, choose your angle measure and direction.
- You can use
to drag point around. Screen shot your final image into your Google doc ( you can also use the export image tool in the pancake stack)
- What is the smallest counterclockwise rotation (in degrees) that will roate the star to a new position in which it looks completely unchanged?Where does each point on the star goes after the rotation? (Example A goes to G).
- Where is the image of segment AO and where is the segment HO after rotation?
- These are questions 3,4 and 5 from Part A.
- Describe the paths of points A and H on the compass star as they “move” from their original positions to their images.
- Describe the relationship among any point X, its image, and the center of the compass star after the rotation in part (1)
- Can you flip the compass star without changing its appearance? If so, what is the line of symmetry. You can use the reflect about Line tool to do Part A 5.