This document contains information about several mathematicians and geometry concepts: - Euclid compiled known geometry works in his famous treatise "Elements", which influenced geometry for generations. He assumed certain properties as either postulates (assumptions specific to geometry) or axioms (assumptions used throughout mathematics). - Heron of Alexandria was a Greek engineer and mathematician who derived Heron's formula for calculating the area of a triangle using the lengths of its three sides. He invented early machines including a steam turbine and rocket-like device propelled by steam. - The document also provides Heron's formula and definitions of terms like postulates, axioms, and the parts of a coordinate plane.

1. COMPUTER
WORK
TANUJ
SHARMA
9330
HANDWORK
MOHIT PANDAY
9312
SUBMITTED TO:
Mrs. SUSHMA SINGH
MAM

3. Crossword Puzzle
 Across
1. The xy plane is also called ________ plane.
2. The four parts in coordinate plane are
called the________.
 Down
1. Axis divide the plane into ______ parts.
2. The x coordinate is called ________.
3. The y coordinate is called _________.
4. The coordinate of the _________ are (0,0).

5. Crossword Puzzle
 Across
1. Assumptions specific are called _________.
2. Assumptions used through out mathematics and
not specifically linked to geometry are called
_________
3. The whole is ________ than the part.
 Down
1. Things equal to something are ________ to
each other.
2. Give two distinct part points there is a _______
line segment that passes through them.

7.  Euclid ( 325 BC-265 BC ) : He was a teacher of
mathematics at Alexandra in Egypt. He collected
all the known work at that time and arranged it
in his famous treatise called elements. This
influenced the whole world’s understanding of
geometry for generations to come.
 Euclid assumed certain properties which were
not to be proved. These were actually obvious
universal truth. These were of two types:
postulates and axioms.
• Assumptions specific to geometry are called
postulates.
• Assumptions used throughout mathematics and
not specifically linked to geometry are called
axioms.

9. Heron of Alexandria was the Greek Engineer and
Mathematician who derived the Heron’s formula. He
was an important geometer and worker in mechanics
who invented many machines including a steam
turbine. His best known mathematical work is the
formula for the area of a triangle in term of the lengths
its sides.
Amongst other things, he developed the Aeolipile, the
first known steam engine but it was treated as a toy.
He invented his rocket like device which used steam
for propulsion.
HERON’S FORMULA
(a+b+c)/2 =s
√[s(s-a)(s-b)(s-c)]