3. The numbers from 1-9
are invented by Hindu
They use a board and
sand to calculate sums
4. In ancient time people
use their fingers to
calculate .
No one knows that
who have invented this
idea.
5. This method is Firstly
used by Babul
civilization.
Then it is introduced
in astronomy so it is
called Astronomical
method of calculation
This method is based
on 60 numbers
6. These numbers are
used in 10th century
Some numbers are
also used till now
7. Due to trade People
learned the ideas of
calculation
People share there
ideas and method of
calculation to
anothers.
11. Triangles are also a
geometric shape
Having three corners
In all tri angles the sum
of all angles 180 degrees
12. Angles are empty space
between two surfaces .
Angles are calculated in
degrees.
In this diagram angle is
represented by
13. Muslim researcher used
the idea about angles
and made shadow clock
or sun clock.
14. Right angle is invented
by the people of Egypt .
They divided a rope into
12 pieces then they
combine 5 pieces and 4
pieces and 3 pieces of
rope .
15. Then they join the corners .
Thus the right angle triangle invented
16. This is a trick in which
we find the value of
unknown number.
In this unknown value is
“x” and at last we find
the value of “x”
This trick is introduced
by Al Khwarizmi
17. He is a founder of a
branch of math's name
algebra
Algebra have many
benefits
18. these shapes are a major
part of geometry.
A man who have a major
part on research in this
field is “Euclid”
19. Scale and compass are
use to draw straight line
and circles.
When we combine these
two instruments we will
make many shapes of
geometry.
20. This is a egg type shape
in geometry it is called
ellipse.
It has simple trick to
draw
21. Cone is a basic shape of
geometry
From cone we can also
make other geometric
shapes.
The shapes are given in
diagram .
22. Geometry is also use to
making design and art.
In early days builders
use combination
geometric shapes.
23. These are some samples
of geometric shapes
which designed on wall
to make wall more
attractive.
24. Study of light and the
function of our eyes is
called optics .
A Muslim scientist Ibn
al Haytham has research
a lot in this field.
25. Ibn al Haytham
explained that first light
rays strike to a object and
rays were reflected in our
eyes thus the object will
visible to our eyes .
26.
27. When light rays enter
from denser medium to
rarer medium it divert its
direction this process is
called refraction .
28.
29. •Pin hole camera is
first camera in the
world .
•It was a dark room
with a small room
where the image of
object will form on
the opposite side of
hole on wall.
Pin hole camera
30. •In now a days
leaser is a new
invention in optics
•It is use in hospitals
as a medical
apparatus
•It is also use in w
ray machines e.t.c
leaser
