Do you know what an equilateral triangle is?
Do you know what a midpoint of a line <BR>segment is?
And the properties of the 30°-60°-90° <BR>triangle?
Then see if you can do this challenge.
Draw two points A and B on the x-axis
and see if you could find the formula for the <BR>coordinates of the point C so that triangle <BR>ABC
is an equilateral triangle.
The coordinates must be dynamic. That is, I <BR>must be able to move A and B and
always get an equilateral triangle.
Good luck!