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They are the x any y axes that are perpendicular to each other and intersect at zero on the Cartesian plane.
The point in a Cartesian coordinate system where the axes intersect. On a 2-D graph, for example, this is where x and y equal zero. also the point (0,0) on a graph
The origin of a graph is the point where the x-axis and y-axis intersect at coordinates (0,0). It serves as the reference point for plotting other points on the graph.
Zero; parallel lines never intersect.
None. In conventional geometry, any intersection of two planes defines a line, which is an infinite number of points. Many planes may intersect along a single line, or any pair of planes may intersect creating a unique line, but however they intersect, the number of shared points is infinite. If the the planes do not intersect (if they are parallel), then they share zero points.
Any two lines can only have one point of intersection. Unless they are parallel, in which case they do not intersect at all. If they are the same line, then they intersect at an infinite number of points.
There are two ways to think of this question, if the triangles don't have to intersect then the answer is zero. If the triangles have to intersect, then the minimum number of points is one, if the triangles meat at vertex to edge or vertex to vertex.
Depends on the lines. Anywhere from zero to infinitely many. If they are straight lines, then the answer is zero, one or infinity.
Parallel lines NEVER touch, so zero.
Cartesian Or the origin
The coordinate plane or grid.