This document defines and provides examples of various geometric shapes and concepts including lines, rays, polygons, intersecting and parallel lines, circles, quadrilaterals, and curves. It notes that two points determine a line, a ray starts at one point and extends endlessly in one direction, polygons are made of line segments, intersecting lines share one common point, parallel lines do not meet, a circle is a closed curve with components like the diameter and radius, a quadrilateral is a four-sided polygon such as a square or rectangle, and curves can be open or closed.

1. Made By –
Deepansha Singh
VI A

2. Contents
 Line
 Ray
Polygons
 Intersecting Lines
 Parallel Lines
 Circle
 Quadrilaterals
 Curve

3. Line
• Two points determine a line.
A B
It is written as AB .

4. Ray
• A ray is a line which starts at one point and
goes endlessly in a direction .
C D
It is written as CD .

5. Polygons
• Polygons are entirely made up of line
segments.
• Some examples are :-
(i)
(ii)

6. Intersecting Lines
• If two lines have one common point , they are
called intersecting lines.
P

7. Parallel Lines
• Lines that do not meet are called parallel
lines.
• Their examples are :-
 Ruler
 Railway track

8. Circle
• A circle is a closed curve.
• Parts of circle :
 Diameter (GB)
 Radius (AO)
 Segment (ED)
 Arc (AG)
 Chord (FC)
 Sector (BOA)
G F
O
E
A
B C
D

9. Quadrilateral
• A four sided polygon is a quadrilateral.
• Some examples of quadrilaterals :-
 Square
 Rectangle
 Rhombus
 Parallelogram
 Trapezium

10. Curve
• Curve means “ not straight ” .
• They are of two types :-
 Opened curve
 Closed curve