مثلث بالانجليزي

 مثلث بالانجليزي

Triangle

تعريف المثلث:

A triangle is a polygon with three sides and three angles.

The sides of a triangle are called edges or legs.

The angles of a triangle are called vertices.

The sum of the interior angles of a triangle is always 180 degrees.

أنواع المثلثات:

Scalene triangle: A triangle with three sides of different lengths.

Isosceles triangle: A triangle with two sides of equal length.

Equilateral triangle: A triangle with three sides of equal length.

خصائص المثلثات:

The triangle inequality: The sum of any two sides of a triangle must be greater than the third side.

The Pythagorean theorem: In a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

The sine, cosine, and tangent of an angle in a triangle can be calculated using the ratios of the sides of the triangle.

استخدامات المثلثات:

Triangles are used in many different fields, including engineering, architecture, and surveying.

They are also used in many different everyday objects, such as bridges, buildings, and airplanes.

مفردات المثلثات:

Vertex: The point where two sides of a triangle meet.

Side: The straight line connecting two vertices of a triangle.

Angle: The measure of the opening between two sides of a triangle.

Base: The side of a triangle that is opposite the apex.

Altitude: The perpendicular line from the apex of a triangle to the base.

Median: The line connecting a vertex of a triangle to the midpoint of the opposite side.

Circumcenter: The center of the circle that circumscribes a triangle.

Incenter: The center of the circle that is inscribed in a triangle.

أمثلة على استخدامات المثلثات:

Bridges: Triangles are used in the construction of bridges to provide support and stability.

Buildings: Triangles are used in the construction of buildings to provide strength and rigidity.

Airplanes: Triangles are used in the construction of airplanes to provide lift and drag.