Texas Instruments TINSPIRE Teacher Software Guidebook - Page 522

When you use a shape tool, the pointer becomes a pencil. As you create any shape that includes a linear portion (for example a ray, segment, or triangle), you can enable custom alignment. • Align a linear portion of the shape to either the horizontal or the vertical axis. • Press g to orient the linear portion of a shape in 15 degree increments relative to the x axis. For precise shape definition, you can type the coordinates of a shape's defining points in parentheses instead of clicking. For example, to create a circle with a center point at (-1,4) type (-1,4) when prompted for the center point. Tool Circle Triangle Rectangle Press · after these steps: 1. Click the work area to position the circle's center point. 2. Move outward from the center point to size the circle. A dotted circumference displays. 1. On the work area, click once to establish the first vertex of the triangle. 2. Move to the location for the second vertex and click the work area a second time. The side of the triangle displays as a dotted line. 3. Move to the location for the last vertex. As you move, all sides of the triangle are shown as dotted lines. 4. Click the work area a third time to create the final vertex and anchor the triangle on the work area. The sides are defined by solid lines 1. Click once to establish the first corner of the rectangle. 2. Move to the location for the second corner, and click again. One side of the rectangle displays. 3. Move away from the side of the rectangle. Move in the direction that corresponds to the rectangle orientation of your choice. The outline of the rectangle appears on the work area. 4. When the rectangle is the correct size, click again to anchor the rectangle to the work area. 510 Graphs & Geometry