Tutorial on how to draw an isosceles trapezoid using geometric sketchpad

1. The bottom angle of the drawing is 30? Isosceles trapezoid

Open the geometric sketchpad, click the [Custom Tools] button on the left sidebar, and select [Quadrilateral] in the pop-up toolkit - [The base angle is 30? isosceles trapezoid], as shown in the figure.

After selecting the above tools, click once in the blank area with the mouse to determine a point, which will serve as an endpoint of the upper base of the isosceles trapezoid, and then drag the mouse to the appropriate position again Click once to determine the other endpoint of the upper bottom edge, so that the bottom angle is 30? isosceles trapezoid, as shown in the figure.

2. The bottom angle of the drawing is 45? The isosceles trapezoid

is the same as above, also select the tool first, click the [Customize Tools] button on the left sidebar, and select [Quadrilateral] in the pop-up tool package - [The base angle is 45? isosceles trapezoid]. Click once in the blank area to determine a point, which will serve as an endpoint of the upper base of the isosceles trapezoid. Then drag the mouse and click again at the appropriate location to determine the other endpoint of the upper base, thus obtaining the base angle of 45? isosceles trapezoid, as shown in the figure.

3. The bottom angle of the drawing is 60? The isosceles trapezoid

is the same, select the tool first. Click the [Customize Tools] button on the left sidebar, and select [Quadrilateral] from the pop-up toolkit - [The base angle is 60? isosceles trapezoid]. Click once in the blank area to determine a point. This point serves as an endpoint of the upper base of the isosceles trapezoid. Drag the mouse and click again at the appropriate location to determine the other endpoint of the upper base, thus obtaining a base angle of 60 ? isosceles trapezoid, as shown in the figure.

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