Скачать или смотреть Countdown Math Class 7 | Chapter no 16 Quadrilaterals overview

A quadrilateral is a polygon with four sides and four vertices. It is a two-dimensional geometric shape that lies on a flat plane. The word "quadrilateral" is derived from the Latin words "quadri" meaning "four" and "latus" meaning "side."

Here are some key characteristics and properties of quadrilaterals:

Sides: A quadrilateral has four sides, which are line segments connecting the vertices of the shape.

Angles: A quadrilateral has four interior angles, formed by the intersection of its sides. The sum of the interior angles in any quadrilateral is always equal to 360 degrees.

Diagonals: Diagonals are line segments connecting non-adjacent vertices of a quadrilateral. A quadrilateral has two diagonals, and these diagonals may or may not intersect each other.

Types of Quadrilaterals: There are various types of quadrilaterals, including rectangles, squares, parallelograms, trapezoids, rhombuses, and kites. These types have specific properties that distinguish them from one another. For example, a rectangle has four right angles, while a parallelogram has opposite sides that are parallel and congruent.

Symmetry: Some quadrilaterals, such as squares and rectangles, exhibit symmetry. This means that they can be divided into two equal halves by a line or axis, and the two halves are mirror images of each other.

Area and Perimeter: The area of a quadrilateral can be calculated using various formulas depending on its type. Similarly, the perimeter is the total length of all four sides of the quadrilateral.

It's important to note that not all quadrilaterals have equal side lengths or congruent angles. The properties and characteristics of a quadrilateral depend on its specific type or shape.
Countdown Math Class 7 | Chapter no 16 Quadrilaterals overview
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