You can move the points A, B and C (click on the point and drag it).
Press the keys “+” and “−” to zoom in or zoom out the visualization window and use the arrow keys to translate it.
You can also construct all centers related with this one (as described in ETC) using the “Run Macro Tool”. To do this, click on the icon , select the center name from the list and, then, click on the vertices A, B and C successively.
|Information from Kimberling's Encyclopedia of Triangle Centers|
Trilinears f(a,b,c) : f(b,c,a) : f(c,a,b), where f(a,b,c) is as given just before X(2979), using U = X(98)
Barycentrics af(a,b,c) : bf(b,c,a) : cf(c,a,b)
X(2987) lies on these lines:
25,110 37,1332 42,1331 69,2165 111,323 141,2963 193,317 251,1994 263,576 287,2395 511,1976 524,1989 526,895 651,1880 1400,1813
X(2987) = isogonal conjugate of X(230)
X(2987) = cevapoint of X(6) and X(511)
X(2987) = X(I)-cross conjugate of X(J) for these I,J: 6,2065 248,1297 1570,6 2422,805