1. Point
A point shows an exact location in space. It has no length, width, or thickness.
2. Line
A line is a straight path that extends endlessly in both directions. It has no thickness and is made up of infinite points.
3. Line Segment
A line segment is a part of a line that has two fixed endpoints.
4. Straight Line
A straight line is the shortest path between two points, extending infinitely in both directions without bending.
5. Parallel Lines
Two lines are parallel if they are always the same distance apart and never meet, no matter how far they are extended.
6. Intersecting Lines
Two lines are intersecting if they cross each other at a single point.
7. Circle
A circle is a closed curve in which all points are at the same distance from a fixed point called the centre.
8. Radius
The radius is the distance from the centre of a circle to any point on its boundary.
9. Diameter
The diameter is the longest distance across the circle, passing through the centre. It is twice the radius.
10. Circumference
The circumference is the distance around the circle (its perimeter).
11. Ray
A ray is a part of a line that has one fixed starting point and extends endlessly in one direction.