All prime numbers are odd numbers.
MYTH. 2 is a prime number and it is even.
PYTHAGORAS is the father of Mathematics.
MYTH. Archimedes is the known as the father of mathematics. He was a Greek mathematician who lived between 287 BC and 212 BC..
Exactly one diameter can be formed in a circle.
MYTH. Infinitely many diameters can be formed in a circle.
The word hundred comes from a word that means 120.
FACT. Hundred comes from the Norse word "hundrath" which means 120.
Score is a word that can also mean 20.
FACT. Score is a word that refer to a group of 20. A score can also refer to a span of 20 years.
The number googol, which is 1 followed by 100 zeros, was invented by a 9-year old boy.
FACT. The term was coined in 1920 by 9-year-old Milton Sirotta, nephew of U.S. mathematician Edward Kasner.
GEOMETRY comes from two Greek words that mean measurement of the earth.
FACT. GEOMETRY comes from the words Gaea (earth) and Metria (measurement).
Numbers have powers.
FACT. The power of a number is the result of multiplying a number by itself some number of times. For example: the 2nd power of 3 is 9 because 3 x 3 is 9.
A square is also rectangle.
FACT. All squares are considered rectangles because they have four right angles.
A circle is a polygon with infinitely many vertices.
MYTH. A circle has no vertices. It is also not a polygon.
The ancient Romans did not have a symbol for zero.
FACT. There is no zero in the Roman numerals.
Ebelus is the name of the symbol used in division.
MYTH. Obelus is the name of the symbol used in division.
There exists a number that when written in word form has its letters in alphabetical order.
FACT. The number 40 if written in word form is forty. The letters are arranged in alphabetical order.
All irregular polygons do not have any right angles.
MYTH. A rectangle is an irregular quadrilateral and all of its angles measure 90 degrees.
Leonardo da Vinci, the artist who painted the Monalisa, was also a mathematician.
FACT. Leonardo da Vinci was a polymath. He was a scientist, mathematician, artist, engineer, and more.
Four is the only number that has the same number of letters as its value.
FACT. Need I say more? four. four letters.
February is the only month that has 28 days.
MYTH. All 12 months have 28 days. Others even have more!
1000 is the smallest number that when spelled out has the letter a.
FACT. One thousand is indeed the first number that has the letter a in its word form.
1 is a prime number.
MYTH. 1 is neither prime nor composite.
A number can be perfect and friendly.
FACT. In number theory, the numbers 6 and 28 are both perfect and friendly. You can learn more about perfect and friendly numbers in high school.