Concept of congruence
Task
Create two triangles and check if both figures are congruent or not.
Explore the construction and learn how to check with Geometry in GeoGebra Calculator Suite if two figures are congruent or not. Then try it yourself by following the instructions below.
Explore the construction...
Instructions
| 1. |  | Open the  Settings, select Show Grid and choose Major and Minor Gridlines.
Note: In the Mobile App select Grid Type before you can choose Major and Minor Gridlines. |
| 2. |  | Create two triangles next to each other. |
| 3. |  | Use the Move tool to select one of the vertices and change its style. |
| 4. |  | Use the Copy Visual Style tool to select the previously changed vertice and copy it's style to the other vertices by selecting them. Hint: Choose the Move tool to leave. |
| 5. | | Switch to the Algebra View. Type (, "Congruent", "Not congruent") into the Input Bar to check if the triangles are congruent. If they are congruent the shown text will be Congruent. |
| 6. | | Switch back to the Tools View. |
| 7. | | Change the style of the text. |
| 8. | | Move the corners to obtain two congruent triangles. |
GeoGebra and select the variable congruent. Press OK to confirm.