Question: What Is A Polygon In Math?

How do you identify a polygon?

Polygons are classified and described by the number of sides, the kind of angles, and whether any of the sides are the same length (or congruent). Many polygons have special names. This figure shows the most common polygons. Notice that we identified a 4-sided polygon as a quadrilateral.

What is a polygon shape?

A polygon is a flat, two-dimensional (2D) shape with straight sides that is fully closed (all the sides are joined up).

What is a polygon for grade 4?

A polygon is a closed figure made by joining line segments, where each line segment intersects exactly two others. Polygons are named according to the number of sides and angles they have. The most familiar polygons are the triangle, the rectangle, and the square. A regular polygon is one that has equal sides.

What is a polygon grade 6?

key idea. A polygon is regular if all of its sides have the same length and all of its angles have the same measure.

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What’s a 13 sided shape called?

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

What are the 20 kinds of polygons?

Terms in this set (18)

  • Three. Trigon or Triangle.
  • Four. Tetragon or Quadrilateral.
  • Five. Pentagon.
  • Six. Hexagon.
  • Seven. Heptagon.
  • Eight. Octagon.
  • Nine. Nonagon or Enneagon.
  • Ten. Decagon.

What is a 100 sided shape called?

In geometry, a hectogon or hecatontagon or 100 -gon is a hundred – sided polygon. The sum of all hectogon’s interior angles are 17640 degrees.

What’s a twelve sided shape called?

In geometry, a dodecagon or 12 -gon is any twelve – sided polygon.

What is a 9 sided shape called?

A nonagon is also called enneagon, which is derived from a Greek word called enneagonon, which means nine corners. The first use of the word nonagon dates back to the early 17th century, and has a Latin prefix (nona) and a Greek suffix (gon), making it a polygon with nine sides and nine angles.

How do you introduce a polygon to students?

Introducing polygons

  1. Draw a regular pentagon and an irregular pentagon on the board.
  2. Get your students to count the sides and corners.
  3. Ask if the sides are the same length on both shapes.
  4. Emphasize that shapes with 5 sides are pentagons, but if the sides and corners are not equal it is an irregular pentagon.

What is the name of a 1000 sided polygon?

In geometry, a chiliagon (/ˈkɪliəɡɒ n /) or 1000-gon is a polygon with 1,000 sides. Philosophers commonly refer to chiliagons to illustrate ideas about the nature and workings of thought, meaning, and mental representation.

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What are the names of 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 6 sided shape called?

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 4 sided shape called?

Meaning. A quadrilateral is a polygon that has exactly four sides. (This also means that a quadrilateral has exactly four vertices, and exactly four angles.)

What is the 20 sided shape called?

In geometry, an icosagon or 20 -gon is a twenty – sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.

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