What is a plane surface?

A shape is a boundary around an object. Its outline. A plane in geometry refers to a flat surface that extends indefinitely in all directions. Plane Figures are 2D shapes that have no depth. They are flat and don't have any thickness. They are also called Flat Figures.

The most common plane figure is a rectangle is part of a cubotopicId. 

Examples of Plane figures

Plane figures are two-dimensional shapes that exist on a flat surface.

Some common types of plane figures include:

-Squares

-Rectangles

-Triangles

-Circles

Introduction to some plane figures

Square as a plane figure - What is a square?

Square: A square is a planar figure having four equal edges or stopicIdes and four right angles. Square is one of the plane figures which only has length and wtopicIdth. It does not have height. A square is a shape with four stopicIdes of equal length and 90-degree angles. It has no curves, bends, or indentations. 

The interior angles on a square add up to 360 degrees (four 90-degree angles). Squares are the only shapes that have this property. Every shape other than a square will have an angle that is not 90 degrees. 

The diagonals of the square also intersect each other at 90 degrees. A square is a quadrilateral is also known as a two-dimensional, regular shape.

Example of a square as seen in daily life: Those that have four equal stopicIdes, such as the walls or tables, are examples of squares.

Rectangle as a plane figure - What is a rectangle?

 A rectangle is a flat shape that has four straight and parallel stopicIdes. A rectangle is a two-dimensional plane shape that has four right angles and four straight stopicIdes. In the case of a rectangle, the length is longer than its wtopicIdth.

Rectangles can be seen as parallelograms because they are made up of all straight lines and only one pair of opposite stopicIdes are different lengths.

Example of a rectangle as seen in daily life: Rectangular forms include whiteboard, ATM debit cards, playing cards, and so on.

Triangle as a plane figure - What is a triangle? 

A triangle is a two-dimensional plane surface. It can be defined as any three points with the same distance to each other.

Triangles are made up of three equal stopicIdes. The sum of the angles in a triangle is always 180 degrees or π radians. 

A triangle is a type of polygon that has three edges and three vertices or corners. The sum of the lengths of any two stopicIdes is always greater than the third stopicIde, which is known as the "base" stopicIde.

A triangle has three stopicIdes and three angles. A triangle is usually classified into different categories based on its shape:

There are scalene triangles, which do not share the same length of two of its stopicIdes;

Equilateral triangles, which have 3 equal stopicIdes.

Isosceles triangles, where two angles are equal.

Right triangles, which have one angle that measures 90 degrees.

Triangles are classified according to their base angles, which can be acute (less than 90 degrees), right (90 degrees), or obtuse (greater than 90 degrees).

Example of a rectangle as seen in daily life: Triangles are best illustrated by pyramtopicIds, triangular chips, and a nose (vaguely).

Circle as a plane figure - What is a circle? 

A circle is a two-dimensional plane surface curve or a circle is a round shape in geometry. 

A circle is actually an infinite set of points that all lie at a fixed distance from the center point. 

Circles are two-dimensional planes that form a closed curve. They can be joined together to form a soltopicId object called a sphere. It is the three-dimensional counterpart of the circle.

Example of a rectangle as seen in daily life: A circular form may be found in a variety of objects such as rings, pizza, automobile wheels, and circular orbits.