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Drawing Figures

u To dilate a line segment toward a specified center point

(1)Draw a line segment, and then select it.

(2)Tap [Draw], [Construct], and then [Dilation].

•This highlights the dilation button on the toolbar.

(3)Tap the center of dilation.

•This displays the Dilation dialog box.

(4)Specify the dilation scale factor.

(5)Tap [OK].

Transformation Using a Matrix or Vector (General Transform)

General Transform lets you input a matrix and/or vector to transform a figure. The result of the transformation is drawn as a separate figure. For example, if you transform line segment AB, the line segment A’B’ will be drawn.

You can perform the following types of transformations with General Transform.

•Matrix Transformation: x-axis/y-axis symmetry, rotation, enlargement, reduction, etc.

•Vector Transformation: Vertical and horizontal parallel displacement

k General Transform Example

In this example draw triangle ABC and then draw triangle A’B’C’, which is symmetrical to ABC about the x-axis. Next, we will draw triangle A’’B’’C’’ by performing a parallel displacement on triangle A’B’C’ of 1 unit along the x- and y-axis.

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