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
How many planes are determined by two intersecting lines? Does a pictograph use lines to communicate? How can we find the volume of a small pebble with the help of measuring cylinder? If the radius of a circle is increased by 20 percent then the area is increased by? How many bases does a trapezoid have? What does 60 mm look like? How do you write 60 million square miles in scientific notation? Find equation of line that has slope of 4 an y-intercept of -7? Why tunnel used parabola shape? What is the volume of 5 cm 9 cm 2 cm? What shape has 6 sides 6 vertices and 6 angles? What is all of the names of a square? What is the shape of an arrowhead called? A point on a line segment that divides the segment into two congruent segments? What is a sphere shape look like? What is the label on the X axis? What is tangent to the x axis? What does a 360 degree survey involve? Does the letter s have a line of symmetry? What is a 165 angle?

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 | Lunias Media Inc. 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.