None

### Why is a pentagon a regular polygon?

A polygon is regular **when all angles are equal and all sides are equal** (otherwise it is “irregular”). This is a regular pentagon (a 5-sided polygon).

### What is the difference between polygon and pentagon?

**A pentagon is a five sided polygon.** **A polygon is a simple closed figure with at least three straight sides**. A regular polygon is a polygon with all sides the same length and all angles the same measure.

### Does a pentagon have 5 equal sides?

**Always five**! In regular pentagons, all the sides are equal in length and have equal angles. The shapes having equal angles are called equiangular.

### What is not a polygon?

Polygons may have any number of sides. **A shape with curved sides** is not a polygon. A shape that is not fully closed is not a polygon.

### What are the 7 polygons?

- Regular Polygons.
- Irregular Polygons.
- Concave Polygons.
- Convex Polygons.
- Trigons.
- Quadrilateral Polygons.
- Pentagon Polygons.
- Hexagon Polygons.

### What is regular polygon called?

Euclidean geometry

A polygon is called regular **if it has equal sides and angles**. Thus, a regular triangle is an equilateral triangle, and a regular quadrilateral is a square.

### What shape is a regular polygon?

What are Regular Polygons? **If all the sides and interior angles of the polygons are equal**, they are known as regular polygons. The examples of regular polygons are square, rhombus, equilateral triangle, etc. In regular polygons, not only the sides are congruent but angles are too.

### Is circle a polygon?

A polygon is a closed figure on a plane formed from a finite number of lines segments connected end-to-end. As a circle is curved, it cannot be formed from line segments, as thus does not fit the conditions needed to be a polygon.

### Is a triangle a polygon?

The line segments making the polygon are called its sides, and the points where line segments meet are called the vertices (singular: vertex). **Triangles are polygons with three sides**. Quadrilaterals are polygons with four sides.

### Is a square a polygon?

1. Square Shape Properties of sides, vertices, angles, and the sum of angles. 2. **A square is also a type of polygon**.

### Is a rectangle a polygon?

For example, a rectangle is a four-sided polygon that has only opposite sides equal but the angles are all equal in measure. Hence, **it is an irregular polygon**.

### What is 5 sided shape called?

**A pentagon** is a geometrical shape, which has five sides and five angles. Here, “Penta” denotes five and “gon” denotes angle. The pentagon is one of the types of polygons. The sum of all the interior angles for a regular pentagon is 540 degrees.

### Is a cube a polygon?

**A cube is a regular polygon**.

### 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.

### Is an oval a polygon?

The circle and oval are **not polygons**, which means their area and perimeter are calculated differently.

### What is a polygon with 12 sides?

**A 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 with all sides the same length is a regular polygon known as a regular dodecagon.

### What polygon has 4 sides?

Definition: **A quadrilateral** is a polygon with 4 sides. A diagonal of a quadrilat- eral is a line segment whose end-points are opposite vertices of the quadrilateral.

### What is a polygon with 3 sides called?

**A triangle** is 3 sided polygon. Mathematics.

### Is a hexagon a polygon?

In geometry, a hexagon can be defined as **a closed two-dimensional polygon with six sides**. Hexagon has 6 vertices and 6 angles also. Hexa means six and gonia means angles.