## WinGeom Tutorial 2 – Constructing an Equilateral Triangle

In the last Wingeom tutorial, we have learned about the Midline theorem and how to use the basic tools of Wingeom such as the point and segment.  In this tutorial, we are going to construct an equilateral triangle by mimicking compass and straightedge construction.  In doing the construction, we will learn how to use the circle tool, and how to delete (or strictly speaking, hide) objects.
1. Double click the Wingeom icon to open the Wingeom window. If the tip window appears, click the Close button.
2. Top open the drawing window, click the Window menu and then click 2-dim or press the F2 key on your keyboard. When the drawing window appears, click the Maximize button.
3. To display the Wingeom drawing tools, click the Btns menu, then click Toolbar.
4. First, we will construct two points which will be the centers of our circle.  To construct the two points, select the segments option button on the toolbar, then right click two distinct places in the drawing window. Notice that letters  A and B appear in your drawing window.
5. Figure 1 – The Drawing Window and the Wingeom Toolbar.

6. To construct a circle with center A and passing through point B, select the circles option button in the tool bar, point at A, hold the left mouse button, slide the mouse pointer to B and then release the mouse button. » Read more

## GeoGebra Tutorial 30 – Loci, Roses and Reflections

This is the 30th GeoGebra Tutorial of the GeoGebra Intermediate Tutorial Series. If this is your first time to use GeoGebra, you might want to read the GeoGebra Essentials Series.

In this tutorial, we reflect a point on a unit circle about the x-axis and about the y-axis to form rectangle ABCD. We construct a segment with length equal to the area of the rectangle passing through point B.  One of the endpoints of this segment is at the origin.  As we move the point B along the the circle, the trace of the end point of the segment that not on the circle’s center will form a 4-petal rose.

If you want to follow this tutorial step-by-step, you can open the GeoGebra window in your browser by clicking here.  You can view the output of this tutorial here. » Read more

## Men, Women, and Mathematics

Here is some light reading that will compensate the readings I gave you in last Monday’s carnival.  By, the way, I have no bias against women, this is just for the sake of relaxation. So ladies, please accept my apologies.

General  Statistics

A successful man is one who makes more money than his wife can spend.
A successful woman is one who can find such a man.

She doesn't shop too many items. But the black bag costs \$3,000.

A woman worries about the future until she gets a husband.
A man never worries about the future until he gets a wife. » Read more