Pentagonal number A visual representation of the first six pentagonal numbers A pentagonal number is a figurate number that extends the concept of triangular and square numbers to the pentagon, but, …

Figure 1 – Pentagonal Numbers Figure 1 illustrates the graphical view of three pentagonal numbers. Like square and triangle numbers, pentagonal numbers are figurate numbers. A figurate number is …

Pentagonal number A pentagonal number, like square numbers and triangular numbers, is a type of figurate number. A figurate number is a number that can be represented using a regular geometric …

Define pentagonal. pentagonal synonyms, pentagonal pronunciation, pentagonal translation, English dictionary definition of pentagonal. pentagon n. 1. A polygon with five sides and five angles. 2. …

Illustrated definition of Pentagonal Number: A number that can be shown as a pentagonal pattern of dots. The first five pentagonal numbers are 1, 5, 12, 22...

Definition of pentagonal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

2 = 2 : The numbers 2 are called \pentagonal numbers" because they count the number of dots in a pentagonal pattern, just k(k+1) as the numbers n = and n = k2 are \triangular numbers" and \square …

Definition of 'pentagonal' pentagonal in British English adjective (of a polygon) having five straight sides

Aug 3, 2023 · What is a pentagonal prism. Learn how to find its surface area and volume with formulas, solved examples and diagrams

Jul 23, 2025 · The first three pentagonal numbers are 1, 5, and 12 (Please see the below diagram). The n'th pentagonal number P n is the number of distinct dots in a pattern of dots consisting of the …