|
Fact |
Category |
Date |
|
16 |
Trigonometry is the study of the measurement of triangles. |
Science > Math |
09/12/08 |
|
17 |
Goldbach's conjecture states that every even number greater than 2 is the sum of two prime numbers. |
Science > Math |
09/14/08 |
|
18 |
Hipparchus invented trigonometry to describe how the planets move. |
Science > Math |
09/21/08 |
|
19 |
Pi, the mathematical constant, is an irrational number. |
Science > Math |
09/21/08 |
|
20 |
Unlike in the real numbers and the complex numbers, multiplication in the quaternions is not commutative. |
Science > Math |
09/21/08 |
|
21 |
A prime number is a number (other than the number 1) that has no numbers that divide evenly into itself besides itself and one. |
Science > Math |
09/25/08 |
|
22 |
There are general formulas for solving polynomial equations of degree less than 5, using only addition, subtraction, multiplication, division, and root extraction, but no such formula exists for polynomials of degree 5 or higher. |
Science > Math |
10/31/08 |
|
23 |
Spherical trigonometry, studies triangles on spheres, and is important in astronomy and navigation. |
Science > Math |
11/01/08 |
|
24 |
A Klein bottle is a non-orientable surface with no distinct "inner" and "outer" sides. |
Science > Math |
11/16/08 |
|
25 |
The base of the duodecimal system is 12. |
Science > Math |
01/31/09 |
|
26 |
The imaginary unit, commonly referred to as "i", is the square root of negative one. |
Science > Math |
02/06/09 |
|
27 |
The Mayan number system is in base twenty. |
Science > Math |
12/06/09 |
|
28 |
An amblygon is another word for a(n) obtuse triangle. |
Science > Math |
11/10/11 |
|
29 |
A number is a triangular number if the sum of one and the product of eight and the number is an odd square number. |
Science > Math |
01/10/17 |
|
30 |
A magic square is a square grid filled with the numbers 1 through N^2, such that each row, diagonal, and column add up to the same number. |
Science > Math |
02/15/21 |
|
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