Points and-lines
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A point has no size or dimensions and is represented by a dot. A line extends infinitely in two directions, has one dimension of length, and is defined by two points. Two lines intersect at a single point when they meet, and a line segment is a finite part of a line between two defined endpoints.
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Points and-lines
- 2. Point A point in geometry is a location. It has no size i.e. no width, no length and no depth. A point is shown by a dot.
- 3. A line is defined as a line of points that extends infinitely in two directions. It has one dimension, length. Points that are on the same line are called collinear points.
- 4. A line is defined by two points and is written as shown below with an arrowhead.
- 5. Two lines that meet in a point are called intersecting lines.
- 6. A part of a line that has defined endpoints is called a line segment. A line segment as the segment between A and B above is written as:
- 7. Line m ↔ Line ab infinite in length points a and b lie on the line lie in the line
- 8. m and n intersect at p m ∩ n = p P is the intersection of m and n