Introduction to Geogebra/Copying a Line Segment
By Ms. Robbins
In this activity you will be learning how to use Geogebra tools to copy a line segment
(2 pts) Plotting a Point
In the space below, use the point tool - the second one in the tool bar - to plot a point anywhere in the space.
After you create the point, right-click on the point and label it A
**If at any point you want to restart, click the refresh button in the top right corner**
(4 pts) Creating a Line and a Line Segment
Plot 2 points, A and B, using the steps from above.
Select the Line Tool - the 3rd one in the toolbar - and create a line through A and B by clicking on the points.
Right-click the line and rename it m
Plot 2 more points, C and D, and make a line between the two new points. Name this line l
Select the Segment Tool (under the line tool) and create a segment between C and D.
Right-click line l and select "show object" such that the check mark goes away - this hides the long line!
(5 pts) Copying a Line Segment
Create 2 points, A and B and create a line segment through them.
Using the point tool, construct point E
Using the line tool, create a line, m, that goes through point E.
Using the Compass tool, click point A then point B to measure the distance between them. Then click on Point E to center the Compass tool at that point.
Create a Point, F, at the intersection of line m and the circle you just made.
Hide everything in your sketch (right-click, Show Object) except for Points A, B, E and F and segment AB.
Use the Segment tool to construct segment EF.
Drag things around in your sketch and observe what happens.
(1 pt) Reflection
What do you notice when you move things around in your sketch?