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# What are the first 12 polygons?

## What are the first 12 polygons?

Polygons: How Many Sides?

3 triangle, trigon
10 decagon
11 hendecagon
12 dodecagon, duodecagon
13 triskaidecagon, tridecagon

## How do you remember geometric shapes?

More videos on YouTube Triangle A triangle has three sides. Think of a tricycle with three wheels. Quadrilateral A quadrilateral has four sides so I think of a quad cycle which is a vehicle with four wheels. Pentagon A pentagon has 5 sides.

What is the name of polygons 1 100?

Names of Polygons

Name Sides Interior Angle
Enneacontagon 90 176°
Hectagon 100 176.4°
Chiliagon 1,000 179.64°
Myriagon 10,000 179.964°

Is there a shape with 11 sides?

In geometry, a hendecagon (also undecagon or endecagon) or 11-gon is an eleven-sided polygon….Hendecagon.

Regular hendecagon
A regular hendecagon
Type Regular polygon
Edges and vertices 11
Schläfli symbol {11}

### How many sides Pentagon have?

five sides

Pentagon
An equilateral pentagon, i.e. a pentagon whose five sides all have the same length
Edges and vertices 5
Internal angle (degrees) 108° (if equiangular, including regular)

### How can I help my child memorize shapes?

Have the child try to describe these differences aloud, and practice sorting paper or plastic toy shapes into groups, saying the name of each shape as he goes. Children also benefit from copying, drawing and building the shapes with sticks, Legos, blocks, or other types of building materials.

What is the biggest polygon?

Regular megagon
Megagon

Regular megagon
Type Regular polygon
Edges and vertices 1000000
Schläfli symbol {1000000}, t{500000}, tt{250000}, ttt{125000}, tttt{62500}, ttttt{31250}, tttttt{15625}
Coxeter diagram

What is a 0 sided shape called?

Regular digon
Digon

Regular digon
Schläfli symbol {10}
Coxeter diagram
Symmetry group D2, [2], (*2•)
Dual polygon Self-dual