1.
The only number in the English language whose letters are in alphabetical order.
2.
On a standard six-sided die, the opposite sides will always add up to this number.
3.
This math branch comes from an Arabic word meaning "the reunion of broken parts."
4.
This subject's name literally translates from Greek as "earth measuring."
5.
Bees use this specific 6-sided geometric shape to build honeycombs because it maximizes space.
6.
The massive number representing a 1 followed by 100 zeros, which inspired a famous search engine name.
7.
The famous number sequence found in nature, from the spirals of sunflowers to pinecones.
8.
Periodical cicadas stay underground for 13 or 17 years—both of which are this type of number—to avoid predators.
9.
This number has no Roman numeral representation and was invented much later than other digits.
10.
This right-triangle term comes from a Greek word meaning "stretched underneath."
11.
This advanced math branch gets its name from the Latin word for a small pebble used for counting.
12.
In 2015, a man memorized and recited 70,000 digits of this famous mathematical constant.
13.
The name of this four-sided shape comes from the Greek word for a "little table."
14.
This math word comes from the Latin word "fractus," which means "broken."
15.
Babylonians divided circles into 360 of these, likely because their calendar year had roughly 360 days.
16.
This diamond-like shape gets its name from a Greek word meaning "spinning top."
17.
The number system used by computers that consists entirely of ones and zeros.
18.
Derived from the Latin word meaning "boundless," this is a concept of endlessness, not a number.
19.
A number that reads the exact same forward and backward, like 12321.
20.
A number that equals the sum of its proper factors (like 6, because 1 + 2 + 3 = 6).
21.
The ancient Babylonians used a base-_______ number system, which is why we have that many seconds in a minute.
22.
The Japanese art of paper folding, which modern mathematicians use to design space satellites.
23.
This term measures the steepness of a line and is traditionally represented by the letter m.
24.
This step-by-step problem-solving process is named after the Persian mathematician Al-Khwarizmi.
25.
Considered one of the world's earliest calculators, it uses sliding beads on rods.
26.
This famous "ratio" (roughly 1.618) is found throughout nature, architecture, and Renaissance art.
27.
In algebra, this rectangular array of numbers gets its name from the Latin word for "womb."
28.
These numbers were originally invented in ancient China to represent debts.
29.
This is the smallest positive integer in the English language that requires three syllables to say.
30.
This word for an elongated circle comes from the Latin word for "egg."
31.
The geometric term for a corner or turning point, from the Latin word meaning "to turn."
32.
The name for an incredibly massive number represented by a 1 followed by 303 zeros.
33.
A number so massive that there are literally not enough atoms in the observable universe to write it down.
34.
A geometric object with no thickness that extends infinitely in two directions.
35.
A perfectly round 3D shape, which is the shape of a soap bubble because it minimizes surface area.
