# Question: Who Invented Polygons?

## What group of polygons do all shapes belong to?

Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons.

The name tells you how many sides the shape has.

For example, a triangle has three sides, and a quadrilateral has four sides….Definition of a Polygon.Shape# of SidesRectangle4Quadrilateral4Pentagon5Hexagon67 more rows•May 16, 2015.

## Can two polygons be congruent if one has a right angle?

Two polygons are congruent if they are the same size and shape – that is, if their corresponding angles and sides are equal. Move your mouse cursor over the parts of each figure on the left to see the corresponding parts of the congruent figure on the right.

## Is a rhombus a square?

A rhombus is a square. This is sometimes true. Â It is true when a rhombus has 4 right angles. Â It is not true when a rhombus does not have any right angles.

## What is a 27 sided polygon called?

Systematic polygon namesOnesTwenties6hexa-267hepta-278octa-289ennea-296 more rows

## What is called polygon?

A polygon is a closed figure where the sides are all line segments. Each side must intersect exactly two others sides but only at their endpoints. … A polygon is usually named after how many sides it has, a polygon with n-sides is called a n-gon.

## What are the first 10 polygons?

Here is a list of polygon names depending on the number of sides they have, starting with three and ending with ten.3 sides – Triangle.4 sides – Quadrilateral.5 sides – Pentagon.6 sides – Hexagon.7 sides – Heptagon.8 sides – Octagon.9 sides – Nonagon.10 sides – Decagon.

## What is a 1000 sided polygon called?

chiliagonIn geometry, a chiliagon (/ˈkɪliəɡɒn/) or 1000-gon is a polygon with 1,000 sides.

## What’s a six sided polygon?

A five-sided shape is called a pentagon. A six-sided shape is a hexagon, a seven-sided shape a heptagon, while an octagon has eight sides… The names of polygons are derived from the prefixes of ancient Greek numbers.

## What is a 16 sided shape called?

hexakaidecagonIn mathematics, a hexadecagon (sometimes called a hexakaidecagon or 16-gon) is a sixteen-sided polygon.

## What is a 99 sided shape called?

EnneacontagonIn geometry, an enneacontagon or enenecontagon or 90-gon (from Ancient Greek ἑννενήκοντα, ninety) is a ninety-sided polygon.

## What’s a 13 sided shape called?

tridecagonIn geometry, a tridecagon or triskaidecagon or 13-gon is a thirteen-sided polygon.

## Are Diamonds polygons?

A polygon is a two-dimensional shape with straight sides. A quadrilateral is a four-sided polygon. A diamond is a quadrilateral, such that each of its sides has the same length, and opposite angles have an equal measure, which makes its opposite sides parallel.