The GeoGebra applets in this activity are identical, each containing several triangles with varying side and angle measures.[br][br]The pink vertex of each triangle allows you to move it, while the blue vertex controls its rotation.

Form the following polygons using the triangles in the applet. Draw on your worksheet the polygons with complete labels and dimensions.

Form a [b][i]triangle[/i][/b]. [br][br]A triangle is a polygon with three straight sides that meet at three corners, called vertices.

Form a [i][b]square[/b]. [br][br][/i]Square is a quadrilateral with four equal sides and four equal angles.

Form a [i][b]parallelogram[/b]. [br][br][/i]A parallelogram is a quadrilateral with two pairs of opposite sides that are equal in length, and its opposite angles are also equal in measure.