Tangential circles.
If two circles intersect then they have to intersect at two points.
The intersection of three planes can be a plane (if they are coplanar), a line, or a point.
In Euclidean space, they could intersect along their whole lengths (in the lines are identical), at a point if they are coplanar and not parallel, or nowhere if they are parallel or skew.
centroid
Coplanar means "on the same plane", so we can imagine that non coplanar means "not on the same plane".For example, if you draw a square and point on a piece of paper, the two objects are coplanar. However, if we were to add depth and the objects were a distance apart, they are said to be non coplanar.
Tangential circles.
Tangent circles.
Coplanar lines that do not intersect (have no common point) are parallel.Two objects are coplanar if they both lie in the same plane, they must either intersect or be parallel.
When the centers of both the circles are at the same point.
If two circles intersect then they have to intersect at two points.
Two circles that don't have the same center point are called "non-concentric circles." These circles can have different radii and may or may not intersect each other. If they intersect, they will do so at two points, one point, or not at all, depending on their sizes and positions.
Parallel lines are a specific type of coplanar lines that never intersect and are always the same distance apart. While all parallel lines are coplanar, not all coplanar lines are parallel; coplanar lines can also intersect at some point. Therefore, while the two concepts are related, they are not synonymous.
The intersection of three planes can be a plane (if they are coplanar), a line, or a point.
In Euclidean space, they could intersect along their whole lengths (in the lines are identical), at a point if they are coplanar and not parallel, or nowhere if they are parallel or skew.
-- They can be parallel, with no points in common, or -- They can intersect in exactly one point.
the point where the altitudes intersect is called the orthocenter.
Four planes are not necessarily coplanar. For four planes to be coplanar, they must all intersect along a common line or within the same two-dimensional space. In general, three planes can intersect at a single point or line, but adding a fourth plane may cause it to not share the same intersection, thus not being coplanar. Therefore, unless specific conditions are met, four planes typically do not lie in the same plane.