3
A scalene triangle.
Four
only 1 lines can contain 3 collinear points. Maybe you mean coplanar?
It is a polygon that is a closed plane figure with 3 or more straight lines.
You did not specify if these are straight lines. If the lines are straight then no, only 7. If you curve the lines then, yes.
Perpendicular lines Parallel lines Diagonal lines
In 2 dimensions, a polygon. In 3 dimensions, a polyhedron.
3 lines and one plane
3
If the shape has three straight lines and no other lines then it has to be a triangle
skew, parallel, intersecting.
A scalene triangle.
A straight angle is 180°, so if there is 180° between the first line and the second, and 180° between the second and the third, then the result is a straight line.
There are two classification A. Straight lines 1.Horizontal lines - these are straight lines in lying position and they suggest calmness. 2. Vertical lines - these are straight lines in upward position and they suggest height and power. 3. Zigzag lines - these are straight lines, too. They suggest disorderliness and trouble. 4. Slanting lines - these are straight lines that give the feeling of action or motion. B.Curved Lines - lines that suggest meanings like motion and feelings. 1. Wavy lines - these lines suggest gracefulness or continuity. 2. Spiral - these are curved lines that suggest action and motion. 3. Concave - a line curved inward. 4. Convex - a line curved outward.
Four
Straight lines.