Rotating a Polygon
- Author:
- kbailey
Read the directions and complete the problems below.
Step 1: Create a polygon with the following vertices
A(-1, 2), B(1, 3), C(2, 5), and D(-2, 4)
Step 2: Decide which point you are rotating around. Use the point tool 
(2nd button) to plot a point. Note: The point created needs to be bright blue. If you get a black dot or a light blue dot, delete it. Create a dot someplace else and move it to where you need it to be.
Step 3: Rotating
a) Click 
(8th button) and choose rotating about a point 
b) Click the polygon.
c) Click the center of rotation
d) Enter the angle of rotation. All angles will be entered a positive. Click counterclockwise or clockwise for the direction.
Note: If you move points A, B, C, or D the corresponding image point will appropriately change as well.
Problem #1: r(90, O )(ABCD)
Problem #2: r(-90, (5, 1)) (ABCD)
*Perform each transformation within this applet.
**Take a screen shot of your work (you will have problem #1 and problem #2 on one screenshot.) Insert it into the appropriate google slide.
***Geogebra will NOT save your work!!!!
(2nd button) to plot a point. Note: The point created needs to be bright blue. If you get a black dot or a light blue dot, delete it. Create a dot someplace else and move it to where you need it to be.
Step 3: Rotating
a) Click (8th button) and choose rotating about a point
b) Click the polygon.
c) Click the center of rotation
d) Enter the angle of rotation. All angles will be entered a positive. Click counterclockwise or clockwise for the direction.
Note: If you move points A, B, C, or D the corresponding image point will appropriately change as well.
Problem #1: r(90, O )(ABCD)
Problem #2: r(-90, (5, 1)) (ABCD)
*Perform each transformation within this applet.
**Take a screen shot of your work (you will have problem #1 and problem #2 on one screenshot.) Insert it into the appropriate google slide.
***Geogebra will NOT save your work!!!!