**2D Shapes: Names and Descriptions**

In geometry, 2D shapes are flat shapes that can be drawn on a piece of paper or screen. They have no thickness and are measured in terms of length and width. Here are some common 2D shapes, their names, and descriptions:

**1. Square**

A **square** is a quadrilateral with four equal sides and four right angles (90-degree angles). All sides of a square are equal in length.

**2. Rectangle**

A **rectangle** is a quadrilateral with four sides, where all sides are not equal in length. A rectangle has four right angles (90-degree angles).

**3. Triangle**

A **triangle** is a polygon with three sides and three vertices (corners). The sum of the interior angles of a triangle is always 180 degrees.

**4. Circle**

A **circle** is a round shape with no beginning or end. It is a set of points equidistant from a central point called the center.

**5. Hexagon**

A **hexagon** is a polygon with six sides and six vertices (corners). Regular hexagons have all sides of equal length.

**6. Octagon**

An **octagon** is a polygon with eight sides and eight vertices (corners). Regular octagons have all sides of equal length.

**7. Pentagon**

A **pentagon** is a polygon with five sides and five vertices (corners). Regular pentagons have all sides of equal length.

**8. Rhombus**

A **rhombus** is a quadrilateral with four equal sides, but not all internal angles are right angles.

**9. Trapezoid**

A **trapezoid** is a quadrilateral with two pairs of sides, where one pair is parallel, and the other pair is not parallel.

**10. Kite**

A **kite** is a quadrilateral with two pairs of adjacent sides of equal length. The angles between the adjacent sides are equal.

These are just a few of the many 2D shapes that exist. Understanding the names and descriptions of these shapes is essential for problem-solving and critical thinking in mathematics and real-world applications.