Differences

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--- en:linearealgebra3d [2026/03/03 16:55] – frankbrennecke
+++ en:linearealgebra3d [2026/03/06 10:31] (current) – frankbrennecke
@@ Line 30: / Line 30: @@
 A sphere is described by the absolute value of the difference between a vector (x/y/z) and the centre of the sphere. For all (x/y/z) on the sphere, this absolute value is equal to the radius of the sphere.
  The radius and the vector (separately for the x, y and z coordinates) can be entered in the **//Spheres//** tab. Clicking on the **//Add to list//** button displays the sphere in the right-hand window. A check is performed to see if the sphere is already part of the list.
+===== Circles =====
+{{screen_EN:cgr_LA3DCircle.png}}
+A circle is described by its centre point, a normal vector in the circle plane and its radius. The radius and the vectors (separately for the x, y and z coordinates) can be entered in the **//Circles//** tab. Clicking on the **//Add to list//** button then displays the circle in the right-hand window. A check is performed to see whether the circle is already part of the list.
 ===== Points =====