A line
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To clarify, since you you couldn't put in symbols: Which group of points are all on the line y=-2x+1? If we are graphing over the real numbers, then there are an infinite number of points: all the points on the line. We can say this mathematically as: "The set of all points (x,y) for which y=-2x+1"
"Non-coplanar" means "not all in the same plane". Non-coplanar points area group of points that no matter how hard you tried or how many differentpositions you checked, there's no way you could maneuver one flat sheetof paper around in space so that all of the points could all lie on the samepaper at the same time.Think of three corners of the floor, and one dot on the wall. No way that thosecould all be on the same big sheet of paper, no matter how you move it around.Any three points can always lie in the same plane. Four or more CAN beall in the same plane, but they don't necessarily have to be.
A rectangle belongs to the group of 4 sided shapes known as quadrilaterals
As kites are not a sociable animal there has been no need to come up with a term for a group of them.
a group may come togther to perform a presentation in a care home