Apparently, this user prefers to keep an air of mystery about them.
2 what's the name of the theorem:median of right-triangle hypotenuse is always half of it nov 19 '12
2 Prove that the two line<->circle intersecting points multiplied by eachother are equal to the square of the circle's tangent mar 28 '13
1 Prove that altitude² = pq? nov 15 '12
1 Prove that point M is on circle c nov 17 '12
0 Equidistant lines of two concentrical squares mar 28 '13