Question: What Does Polygonal Mean?

What is a 9 sided shape called?

enneagonA 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..

What is 11 sided shape called?

hendecagonIn geometry, a hendecagon (also undecagon or endecagon) or 11-gon is an eleven-sided polygon. (The name hendecagon, from Greek hendeka “eleven” and –gon “corner”, is often preferred to the hybrid undecagon, whose first part is formed from Latin undecim “eleven”.)

Do regular polygons have equal angles?

In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). Regular polygons may be either convex or star.

Is a heart a polygon?

A heart is not a polygon because it is has curves. A circle is not a polygon because it is made of a curve.

What does a rhombus mean?

In plane Euclidean geometry, a rhombus (plural rhombi or rhombuses) is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length. … A rhombus with right angles is a square.

What is the importance of polygons in our daily life?

We use polygons at almost every moment in our daily life from fruits to honey comb, from floor designs to rectangular or square shaped buildings. We use nut bolts top of which are either circular or hexagonal.

What are the 4 properties of a rhombus?

Properties of RhombusAll sides of the rhombus are equal.The opposite sides of a rhombus are parallel.Opposite angles of a rhombus are equal.In a rhombus, diagonals bisect each other at right angles.Diagonals bisect the angles of a rhombus.The sum of two adjacent angles is equal to 180 degrees.More items…•

Is every square a rhombus?

A square is a special case of a rhombus, because it has four equal-length sides and goes above and beyond that to also have four right angles. Every square you see will be a rhombus, but not every rhombus you meet will be a square.

What does polygon mean in English?

1 : a closed plane figure bounded by straight lines. 2 : a closed figure on a sphere bounded by arcs of great circles.

Where did the word polygon originate from?

Etymology. The word polygon derives from the Greek adjective πολύς (polús) ‘much’, ‘many’ and γωνία (gōnía) ‘corner’ or ‘angle’. It has been suggested that γόνυ (gónu) ‘knee’ may be the origin of gon.

How many sides are on a polygon?

A polygon is a plane (2D) shape with straight sides….2D Shapes.Triangle – 3 SidesSquare – 4 SidesPentagon – 5 SidesHexagon – 6 sidesHeptagon – 7 SidesOctagon – 8 SidesNonagon – 9 SidesDecagon – 10 SidesMore …

What is a 10 sided shape?

decagonIn geometry, a decagon (from the Greek δέκα déka and γωνία gonía, “ten angles”) is a ten-sided polygon or 10-gon. The total sum of the interior angles of a simple decagon is 1440°.

Are hexagons 6 sides?

In geometry, a hexagon can be defined as a polygon with six sides. The two-dimensional shape has 6 sides, 6 vertices and 6 angles.

What do you call a closed shape?

A polygon is a closed shape with straight sides. Rectangles, triangles, hexagons, and octagons are all examples of polygons. The word polygon comes from the Greeks, like most terms in geometry, which they invented. It simply means many (poly) angles (gon).

Is every kite a rhombus?

For example, kites, parallelograms, rectangles, rhombuses, squares, and trapezoids are all quadrilaterals. Kite: A quadrilateral with two pairs of adjacent sides that are equal in length; a kite is a rhombus if all side lengths are equal.

How many sides does a Heptagon have?

7Heptagon/Number of edges

What is the meaning of polygonal shape?

In geometry, a polygon can be defined as a flat or plane, two-dimensional closed shape with straight sides. It does not have curved sides. Here are a few examples of polygons. Polygons can be of two types: Regular Polygons – Polygons that have equal sides and angles are regular polygons.

How many sides does a decagon have?

10Decagon/Number of edges

What is a 2 sided shape?

In geometry, a digon is a polygon with two sides (edges) and two vertices. … A regular digon has both angles equal and both sides equal and is represented by Schläfli symbol {2}. It may be constructed on a sphere as a pair of 180 degree arcs connecting antipodal points, when it forms a lune.

What’s a 7 sided shape called?

heptagonA 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 does polyhedron mean?

A polyhedron is a 3-dimensional solid made by joining together polygons. The word ‘polyhedron’ comes from two Greek words, poly meaning many, and hedron referring to surface.