Follow instructions to practice using the basic tools in Geogebra:[br]1. Construct a point using the "point" button.[br]2. Find the "line" button and create a line through point A.[br]3. Click on the reverse arrow button on the top right corner to undo what you just did. This is the undo button[br]4. Find the "polygon" button (looks like a triangle) and create a triangle starting from point A. Your triangle should be triangle ABC.[br]5. Click on the "Move" button (looks like a mouse cursor) and move the vertices of your triangle around.

1. I created a triangle ABC with the given side lengths: 3, 6.2, and 6.9. Next to it are segments with equal lengths to one of each of the sides of the triangle.[br][br]2. Create a triangle with the given segments that is DIFFERENT from the original triangle. The rule is that the endpoints of each segment must be touching the endpoints of another segment.[br][br]Helpful Tip: The darker blue dot will allow you to drag the segments around, and the lighter blue dot will allow you to change the direction of the segment.[br] [br]3. Is this possible?

We call this the Side-Side-Side Congruence Postulate. In short, we will call it the SSS.