An Euler line is a line that go throughs the three points called the circumcenter, orthocenter and centroid.

-construct any triangle

-construct all three perpendicular lines of the triangle

-put a point where the three lines cross[circumcenter]

-hide all the perpendicular lines(you'll need it later)

-construct the altitudes of the triangle(angle bisector)[orthocenter]

-put a point where the three altitudes cross

-hide all the three altitudes(you don't really need them now)

-construct the medians of the triangle(i don't understand this so i just show the perpendicular lines(right clicking on the sidebar) then i draw a line from the points A, B and C then to the perpendicular lines where they meet on the triangles.)[centroid]

-put a point where the median cross

-hide everything else except for the points of the circumcenter, orthocenter and the centroid and of course, the triangle.

-draw a line where the three points meet.

-and you have an Euler line! :)

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