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Septagon vs. Heptagon — Which is Correct Spelling?

By Tayyaba Rehman & Fiza Rafique — Updated on March 18, 2024
"Septagon" is the incorrect spelling; the correct term is "Heptagon," which refers to a seven-sided polygon.
Septagon vs. Heptagon — Which is Correct Spelling?

Which is correct: Septagon or Heptagon

How to spell Heptagon?


Incorrect Spelling


Correct Spelling

Key Differences

Think of the term "heptathlon," an athletic event with seven parts, to remember "Heptagon."
Note the 'H' in "Heptagon" for its seven sides and angles.
Recall that "hepta-" is Greek for seven, aligning with other geometrical terms like hexagon.
Remember that "sept-" is usually used in the context of months, like September.
"Heptagon" has the prefix "hept-" which is also found in "heptad," a group of seven.

How Do You Spell Heptagon Correctly?

Incorrect: The child tried to draw a septagon, but it didn't look quite right.
Correct: The child tried to draw a heptagon, but it didn't look quite right.
Incorrect: In geometry, a septagon is less commonly used to refer to a seven-sided polygon.
Correct: In geometry, a heptagon is a seven-sided polygon.
Incorrect: Many people aren't familiar with the term septagon.
Correct: Many people aren't familiar with the term heptagon.
Incorrect: She found a tile shaped like a septagon at the antique shop.
Correct: She found a tile shaped like a heptagon at the antique shop.

Heptagon Definitions

Heptagon refers to a closed, flat, seven-sided shape.
The architect used a heptagon as the base for the tower.
A Heptagon is a plane figure with seven equal or unequal sides.
They formed a heptagon with seven pieces of string.
A Heptagon is a geometrical figure with seven straight edges.
He cut out a heptagon from a sheet of paper.
A Heptagon is a polygon with seven sides and seven angles.
The children drew a heptagon on the chalkboard.
Heptagon denotes a seven-sided figure in Euclidean geometry.
The art piece was shaped like a heptagon.
In geometry, a heptagon is a seven-sided polygon or 7-gon. The heptagon is sometimes referred to as the septagon, using "sept-" (an elision of septua-, a Latin-derived numerical prefix, rather than hepta-, a Greek-derived numerical prefix; both are cognate) together with the Greek suffix "-agon" meaning angle.
A plane figure with seven straight sides and angles.
A polygon with seven sides and seven angles.
(geometry) A polygon with seven sides and seven angles.
A plane figure consisting of seven sides and having seven angles.
A seven-sided polygon

Heptagon Meaning in a Sentence

The sum of the interior angles of a heptagon is 900 degrees.
Each interior angle in a regular heptagon measures approximately 128.57 degrees.
A heptagon has seven angles in addition to its seven sides.
A regular heptagon cannot be constructed with a compass and straightedge alone; it requires the use of a marked ruler or other tools.
The construction of a heptagon involves dividing a circle into seven equal parts.
In the Christian tradition, the heptagon represents the seven days of creation and is a symbol of perfection.
In heraldry, a heptagon might symbolize the seven virtues or seven sins.

Common Curiosities

Why is it called Heptagon?

It's called "Heptagon" because it has seven (hepta in Greek) sides and angles.

What is the pronunciation of Heptagon?

Pronounced as "HEP-tuh-gon."

Which vowel is used before Heptagon?

"A," as in "a heptagon."

What is the root word of Heptagon?

The root words are "hepta-" (seven) and "-gon" (angle).

What is the plural form of Heptagon?


What is the verb form of Heptagon?

There is no verb form of "Heptagon."

What is the singular form of Heptagon?


Which preposition is used with Heptagon?

"Of" can be used, as in "heptagon of points."

Which conjunction is used with Heptagon?

"And" is often used, as in "a heptagon and a hexagon."

Is Heptagon an abstract noun?


Is Heptagon a vowel or consonant?

It's a word, not a single letter.

Is Heptagon a countable noun?


Is Heptagon a collective noun?


Is the word Heptagon imperative?


Is the word “Heptagon” a Direct object or an Indirect object?

It can be a direct object, as in "I drew a heptagon."

What part of speech is Heptagon?


Is Heptagon a noun or adjective?


Is Heptagon a negative or positive word?


How many syllables are in Heptagon?

3 syllables.

Which determiner is used with Heptagon?

"This" or "that" can be used.

Is Heptagon an adverb?


Is the Heptagon term a metaphor?

Not usually.

Is the word Heptagon a Gerund?


How do we divide Heptagon into syllables?


How is Heptagon used in a sentence?

"The artist incorporated a heptagon into the design."

Which article is used with Heptagon?

"A" or "the" depending on the context.

What is the stressed syllable in Heptagon?

The first syllable, "Hep."

What is another term for Heptagon?

Seven-sided polygon.

What is the opposite of Heptagon?

There is no direct opposite.

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Author Spotlight

Written by
Tayyaba Rehman
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
Co-written by
Fiza Rafique
Fiza Rafique is a skilled content writer at, where she meticulously refines and enhances written pieces. Drawing from her vast editorial expertise, Fiza ensures clarity, accuracy, and precision in every article. Passionate about language, she continually seeks to elevate the quality of content for readers worldwide.

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