![]() To do this, right click each angle symbol and uncheck Show label from the context menu.ġ3. ![]() To do this, click the Angle tool and then click the interior of triangle ABC.ġ2.) We now hide the measures of the angles. ) We reveal the angle measures of the interior angles of the triangle, the change the colors of the angle symbols (green sectors). You can find the Greek letters by pressing the button located at the right of the text box.ġ1. Your drawing should look like Figure 1.ġ0.) Using steps 8-9, create another slider with the same specifications shown in Figure 3 and name it. GeoGebra would automatically name it C, otherwise right click and rename it C.Ħ.) Click the Polygon tool and click the points in the following order: point A, point B, point C, and click again on point A to close the polygon. We then repeat the process, and rotate triangle A’B’C’ 180 degrees clockwise about the midpoint of A’C’ to produce A’’B’’C’’.ġ.) Open GeoGebra and select Geometry from the Perspectives menu.Ģ.) Click the Line through Two Points tool, and click two distinct locations on the Graphics view to construct line AB.ģ.) If the labels of the points are not displayed, click the Move tool, right click each point and click Show label from the context menu.Ĥ.) Click the New Point tool and construct a point C not on line AB.ĥ.) Display the name of the third point. Next, we rotate the triangle 180 clockwise about the midpoint of BC producing triangle A’B’C’ (see Figure 1-B). Afterwards, we reveal the interior angle measures of the triangle and create two angle sliders namely and. The construction will start by drawing line AB and constructing triangle ABC using the Polygon tool. Figure 1 – Rotated triangles using sliders.
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