In geometry, a pentagon (from the Greek πέντε pente meaning five and γωνία gonia meaning angle) is any fivesided polygon or 5-sided polygon. The sum of the interior angles of a simple pentagon is 540°. Pentagons may be simple or self-intersecting. A regular pentagon (or star pentagon) that intersects itself is called a pentagram.

How many sides does a pentagon have?

Answer – The Pentagon has 5 (five) both sides. A pentagon is a pentagon, also known as a pentagon in geometry. 540° is the sum of the interior angles of a simple pentagon. A pentagon that intersects itself is called a pentagram.

What are the types of pentagons?

Types of Pentagon

• Regular pentagon or equilateral pentagon: Five equal sides and angles.
• Irregular pentagon: five scalene and scalene angles.
• Convex pentagon: interior angles cannot be greater than 180 degrees.
• Concave Pentagon: Interior angles greater than 180 degrees, causing the sides to « sink » like a « cave »

How many sides do 2 pentagons have?

‘ A pentagon is a closed, flat two-dimensional figure with five sides and five angles.

Is any 5-gon a pentagon?

In geometry, pentagon (from Greek πέντε pente meaning five, γωνία gonia meaning angle) is any pentagon or 5-sided shape. The sum of the interior angles of a simple pentagon is 540°. Pentagons may be simple or self-intersecting. A regular pentagon (or star pentagon) that intersects itself is called a pentagram.

How many sides does a pentagon have?

40 related questions found

What is a 10-gon?

Answer (1 of 25): A decahedron (polyhedron) is called a decahedron (three-dimensional), and a two-dimensional figure of a decahedron (polygon) is called decagon.

What is the 99-sided polygon called?

What is the 99-sided polygon called? pentagon (5-sided), dodecagon (12-gon) or icosagon (20-gon) – Triangles, quadrilaterals, and nonagons (9-gons) are notable exceptions. 8-sided shapes are commonly used in geometry, architecture, and even road signs.

What is a 7-sided shape called?

In geometry, Heptagon is a heptagonal polygon or 7-sided polygon. heptagon is sometimes called septagon, using « sept- » (omitting septua-, derived from the Latin numerical prefix, rather than hepta-, derived from the Greek numerical prefix; both are homologous) with the Greek suffix Use « -agon » together for angles.

What is a 9-gon?

In geometry, a nonagon (/ˈnɒnəɡɒn/) or a nonagon (/ˈɛniəɡɒn/) is a nonagon or nonagon. The name nonagon is a mixture of prefixes, derived from Latin (nonus, « ninth » + gonon), with equivalent usage, attested in 16th-century French nonogone and 17th-century English.

Can a pentagon have 4 right angles?

Sum of interior angles = 540′. Four right angles would leave 180′, which is impossible.So a pentagon has at most three right angles, as the picture shows. … 6 right angles = 540′, leaving 360′, which is impossible.

Does a pentagon have 6 sides?

A pentagon is called a pentagon.Hexagons are hexagona heptagon is a heptagon, and an octagon has eight sides… The modern pentathlon has five items – a pentagon has five sides.

Is a hexagon an equilateral?

A hexagon is made of 6 equilateral triangles. The length of each equilateral triangle is 8 units.

What is the shape of 100 faces called?

In geometry, a hectogon or hecatontagon or 100-gon is a hundred-sided.

Can a polygon have 2 sides?

In geometry, a number is a polygon with two edges (edges) and two vertices. Its construction is degenerate in the Euclidean plane, since either the two sides coincide or one or both sides must be curved; however, it can be easily visualized in elliptical space.

What is a quadrilateral?

definition: a quadrilateral is a polygon with 4 sides. The diagonal of a quadrilateral is a line segment whose endpoints are the opposite vertices of the quadrilateral. In the figure below, ABCD is a quadrilateral, and AC and BD are two diagonals. We name the quad by naming the four vertices in order.

What is a hexagon called?

In geometry, a hexagon (from Greek ἕξ, hex, meaning « six », γωνία, gonía, meaning « angle, angle ») is a hexagon or hexagon. The sum of the interior angles of any simple (non-self-intersecting) hexagon is 720°.

What is the octagon called?

In geometry, an octagon (from Greek ὀκτάγωνον oktágōnon, « octagonal ») is an octagon or octagon. A regular octagon with Schläfli notation {8} can also be constructed as a quasi-regular truncated square t{4}, which alternates the two types of sides.

What is an infinite polygon?

In geometry, apeirogon (from the Greek words « ἄπειρος » apeiros: « infinity, infinity » and « γωνία » gonia: « angle ») or infinite polygon is a generalized polygon with countably infinite sides.

What is a 14-gon?

In geometry, tetragonal or tetradecagon or 14-sided is a tetragonal polygon.

What is the 13-sided shape called?

A 13-sided polygon, sometimes called a triskaidecagon.

What is a 15-gon?

In geometry, Pentagonal or Pentagonal or Pentagonal is a 15-sided polygon.

What is the dodecagon called?

dodecagon is a 12-sided polygon. Several special types of dodecagons are illustrated above. In particular, a dodecagon with vertices equally spaced around a circle and all sides of the same length is a regular polygon called a regular dodecagon.