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\\December 6, 2023 12:54 PM Bharat Arora P-6 Reader _________________________ Date: ___________________

Encapsulate
math
geOMetry

Basic geometrical Ideas types of Lines

Point: A small dot which represents the position or location is called a point.
A Vertical Slanting
Point A Horizontal line line
Line: A path which can extend in both directions indefinitely is called a line. line
A B
Intersecting Lines
Line segment: A line segment is a part of a line. It has two end points. l m
A B
O
ray: A part of a line extending only in one direction is called a ray.
A B
Parallel Lines:

Angle p
q
When two rays or straight lines meet or intersect at a point, they form an
angle, as shown below. Perpendicular Lines:
A C
Arm

Angle D A B
O B
Vertex
Arm

Open and Closed Figures Circle
Open figures Centre of circle
O is the centre. The distance between point O.
and any point on the boundary of the circle is
equal.
Closed figures diameter
O The diameter AB is the distance across a
A B circle through its centre.
radius
Polygons The radius OR is the distance from the
centre to any point on the circle.
Circumference
R The circumference is the distance around
the circle.

Solids Nets of Solid
Basic Solids

Cube Cuboid
Cube Cuboid Cone Cylinder Sphere

154 Mathematics-4