1 is a prime number.
MYTH. 1 is neither prime nor composite.
A square is also rectangle.
FACT. All squares are considered rectangles because they have four right angles.
Exactly one diameter can be formed in a circle.
MYTH. Infinitely many diameters can be formed in a circle.
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.
Ebelus is the name of the symbol used in division.
MYTH. Obelus is the name of the symbol used in division.
A circle is a polygon with infinitely many vertices.
MYTH. A circle has no vertices. It is also not a polygon.
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.
February is the only month that has 28 days.
MYTH. All 12 months have 28 days. Others even have more!
All prime numbers are odd numbers.
MYTH. 2 is a prime number and it is even.
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).
All irregular polygons do not have any right angles.
MYTH. A rectangle is an irregular quadrilateral and all of its angles measure 90 degrees.
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 ancient Romans did not have a symbol for zero.
FACT. There is no zero in the Roman numerals.
Four is the only number that has the same number of letters as its value.
FACT. Need I say more? four. four letters.
