Looking for math words that start with H?

From Halves and the Harmonic Series to Heptagon and Hero’s Formula, I’ve put together a list with some of the best and most useful math words beginning with the letter H.

## Math Words That Start With H

**Half Gallon** – a half of a gallon, equal to 2 quarts (1.9 liters).

**Half-Circle** – a one-dimensional locus of points that forms half of a circle.

**Halves **– to divide into two equal parts I halved an apple. 2 : to reduce it to one half, He halved the recipe.

**Harmonic Series **– the harmonic series is the divergent infinite series {\displaystyle \sum _{n=1}^{\infty }{\frac {1}{n}}=1+{\frac {1}{2}}+{\frac {1}{3}}+{\frac {1}{4}}+{\frac {1}{5}}+\cdots .}

**Heavier **– Having relatively great weight: a heavy load. 2. Having relatively high density; having a high specific gravity.

**Height **– the part that rises or extends upward the greatest distance : measured in cm, inches, meters, etc.

**Helix **– a curve for which the tangent makes a constant angle with a fixed line.

**Hemisphere **– a three-dimensional shape that’s half of a sphere with one flat, circular side.

**Heptagon **– a seven-sided polygon; also called a septagon sometimes.

**Hero’s Formula** – also called Heron’s Formula sometimes; gives the area of a triangle when the lengths of all three sides are known.

**Hexagon **– a 2D geometric polygon that has six sides and six angles.

**Hexagonal Prism **– a prism composed of two hexagonal bases and six rectangular sides.

**Hierarchy **– a set-theoretical object, consisting of a preorder defined on a set.

**Homogeneous **– a function of several variables such that, if all its arguments are multiplied by a scalar, then its value is multiplied by some power of this scalar.

**Horizontal **– A horizontal line is one that goes from left to right across the page.

**Hundred **– a number equal to 10 times 10.

**Hundredths **– a hundredth part, especially of one (1/100).

**Hyperbola **– an open curve with two branches, the intersection of a plane with both halves of a double cone.

**Hypercube **– an n-dimensional analogue of a square (n = 2) and a cube (n = 3).

**Hypotenuse **– the side of a right-angled triangle that is opposite the right angle.

**Hypothesis **– a potential explanation for something that happens or that you observe and think to be true.

I hope you found the words you were looking for from the list above.

This isn’t an exhaustive list, if there are any math words starting with the letter H that you would like added to the list, please leave me a comment below.

If you’d like to explore more math words starting with different letters of the alphabet, click any of the letters below to go to the list for that letter:

*Image credits – Photo by Joshua Hoehne on Unsplash*