Evaluate
WOLFRAM

DEMONSTRATIONS
PROJECT
NinePoint Circle in the Complex Plane
θ
1
1
.
5708
θ
2
3
.
66519
θ
3
5
.
75959
A
B
C
O
Drag the sliders to explore triangles with vertices on the unit circle and their ninepoint circles. Use the bookmark for right triangles, moving the
θ
3
slider.