GeoGebra Geometry Tools Exploration

Explore the applet below and follow the steps to learn how to use the GeoGebra Geometry App.
BASIC TOOLS
  1. After you complete each of the following directions, you may want to make sure it worked. Do this by clicking on . Then move around the item.
  2. Create points by using . Click a few times on the screen.
  3. What is the difference between ?
  4. Create an arbitrary triangle using the following tools: (a) (b)  (c) . What similarities and differences do you notice in creating triangles.
  5. Use to create a circle. How do you create the radius of the circle?
EDIT TOOLS: What can we use to make changes to what we've created?
Click on each of these buttons and see what you need to do to make them work.
  1. Why would you use ?
  2. What do do?
  3. What does do?
CONSTRUCTION TOOLS
  1. Construct a midpoint using . What do you notice?
  2. What are the differences between  and ? You will have to create a line or line segment in order to use these tools. Move around the points of intersection and endpoints to discover differences.
  3. Construct a line parallel to another through a point by using . Try to make the point at an angle other than 90 degrees.
  4. Construct the  Angle Bisector for two angles of the triangle. You will need to create an angle (a) use 3 points (b) use 2 lines or segments.
  5. What does do? You need to create a circle with a radius to better understand this tool.
Other Tools
Scoll down to the bottom and click on MORE TOOLS. Go back up to the top. MEASURE: We will not be using this tool at this point. POINTS:  1. Use to create an intersection point.  2. Use to create a point on another object. LINES: We have explored the tools needed in this category. Optional: you can explore the rest of these tools. CIRCLES:
  1. Use to create a circle with a radius.
  2. This tool is a compass. What is this tool useful for?
POLYGONS: What will they be useful for? CONICS, TRANSFORM, MEDIA, OTHERS: We will not be using them at this time. You may explore these on your own.
– Sabrina Azesberger, Rose Neal, Zbynek Konecny, GeoGebra Team German

Information: GeoGebra Geometry Tools Exploration