answersLogoWhite

0

Subjects>Math>Geometry

An 18 gon has how many diagonals?

User Avatar

Anonymous

∙ 13y ago
Updated: 4/28/2022

FORMULA: (n [squared] -- 3n) / 2 (18 [squared] -- 3 x 18) / 2 = (324 -- 54) / 2 = 270 / 2 = 135 Easy as Pi ;)

User Avatar

Wiki User

∙ 13y ago
Copy

What else can I help you with?

Continue Learning about Geometry

How many diagonals in 18-gon?

Using the diagonal formula: 0.5*(182-54) = 135 diagonals


How many diagonals are in a 24-gon?

252 diagonals


How many diagonals in 25-gon?

There are 275 diagonals in a 25 sided polygon


How many diagonals in a 15-gon?

0.5*(152-45) = 90 diagonals


How many diagonals in a regular 46-gon?

many triangles does a regular 46-gon have

Related Questions

How many diagonals in 18-gon?

Using the diagonal formula: 0.5*(182-54) = 135 diagonals


How many diagonals of a 12-gon have?

It has 54 diagonals


How many diagonals does a 33-gon have?

It has 495 diagonals.


How many diagonals are in a 24-gon?

252 diagonals


How many diagonals are in a 17-gon?

There are 119 diagonals.


How many diagonals does the 13 gon?

78


How many diagonals are in a 20-gon?

170


How many diagonals in a 15-gon?

0.5*(152-45) = 90 diagonals


How many diagonals are in a 39-gon?

39*36/2 = 702 diagonals.


How many diagonals are in a 11- gon?

There are 44 diagonals in an 11 sided undecagon


How many diagonals in 25-gon?

There are 275 diagonals in a 25 sided polygon


How many diagonals does a 20 gon has?

A 20 sided polygon has 170 diagonals

Trending Questions
Length of a pen in cm? How many edges and vertices does a pyramid have? What is 60 degrees in centimeters? What is the top view of a rectangular pyramid? What are the coordinates of the point on the directed line segment from (-97) to (3-8) that partitions the segment into a ratio of 2 to 1? The total area of all faces of a solid figure? What is the importance of slope intercept form? How big is a bathroom door opening? How much is 1 acre of land? What do all the angles in a pentagon equal? What is the ratio of an igloos circumference to it's diameter? How many square feet are in 14 feet x 64 feet? What is the eight-sided polygon? How many football fields fit in five acres? What is the molecular geometry of CCl4? Although the Greeks thought some constructions impossible all of the so-called impossible problems were later proven to be possible in the 18th and 19th centuries? How many lines of symmetry in a square? What point is the projection of Q on segment RT? What angle is 114 degrees? What is the formula used to find area?

Resources

Leaderboard All Tags Unanswered

Top Categories

Algebra Chemistry Biology World History English Language Arts Psychology Computer Science Economics

Product

Community Guidelines Honor Code Flashcard Maker Study Guides Math Solver FAQ

Company

About Us Contact Us Terms of Service Privacy Policy Disclaimer Cookie Policy IP Issues
Answers Logo
Copyright ©2025 Answers.com. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.