{tocify} $title={Table of Contents For Geometry}

Geometry formula : There are very few people who find "geometry" easy. So to make " geometry " easier for you, today Learning View Bd has  appeared with " All geometric formulas " . Take a look at what is happening today: geometric formulas , rectangular cubes, cubes, angles, cylinders, spheres, squares, squares, properties of squares, properties of rectangles, rectangles, triangles, circles, quadrilaterals, etc.     

First  let’s take a look at some  basic knowledge of geometry .

What is geometry:

Geometry is  an important part of mathematics. The scripture by which the method of measuring the land, its position, size and area, etc., can be known and measured accurately and in detail, is called geometry. The Greek scholar  Euclid was the  father of geometry.  The word geometry means the amount of land. Where chord means land and date means quantity.

Geometry can be divided into two parts.

1. Practical geometry

2. Theoretical geometry.

We will now   discuss the law of geometry :

1. What is a rectangular solid?

Answer: Rectangular solid: A solid consisting of three pairs of parallel rectangular planes or surfaces is called a rectangular solid.

2. What is the formula for determining the volume of a rectangular solid?

Answer: Volume of a rectangular solid = (length * width * height) cubic unit.

3. What is a cube?

Answer: A rectangular solid is called a cube if its length, width and height are equal.

4. What is the volume of the cube?

Answer: The volume of a cube  

5. What is the angle of the cube?

 Answer: a3a.

. Write the formula for determining the total area of ​​a cube.

Answer: 2 (a 2  + a 2  + a 2  ) = 6a 2

6. What is Konak?

The solid that is formed by rotating any one of the right angles of a right-angled triangle is called an isosceles angle.

. What is the area of ​​the curve of a cone?

Answer: 1/2 × 26rl = πrl square unit

        = πr√ (h 2  + r 2  ) square unit

9. What is the size of the cone?

Answer: πrl + πr 2 = r (l + r)

10. Write the formula for determining the total surface area of ​​a cone.

Answer:  1/3 × (land area × height)

        = 1/3 πr 2 h cubic unit

11. What is the area of ​​curved surface of the roller?

Answer: Land circumference × height = 2πrh square unit.

13. What is the total surface area of ​​the roller?

Answer: 2πr (h + r) square unit.

14. What is the size of the roller?

Answer: πr 2 h dense unit.

15. What is the size of the sphere?

Answer: 4 / 3πr 3  cubic units.

16. What is the surface area of ​​the sphere?

Answer: 4πr 2  square units.

16. What is a square?

Answer: If one of the vertical arms of a rectangle is equal, it is called square.         

16. Write some properties of the square.



The following are some features of a square:

  1. All the angles of the square are right angles.
  1. A=B=C=D=900
  • Each side of the square is equal and parallel.

AB = BC = CD = DA

  • The angles of a square are equal to each other.
  • The two angles of a square bisect each other at right angles.

AO=BO And CO=DO

<AOB=<BOC=<COD=<AOD=900= Right Angle

Here are some formulas for squares (Geometry formulas) :

  1. Area of ​​a square = length of one arm 2
  2. Length of one arm =  √ (area of ​​square)
  3. The range of the square = 4 x the length of one arm
  4. The angle of the square = √2 x the length of one arm
  5. Multiply by area = 1 / (1 / multiplied by)} 2

19. What is a rectangle?

Answer: A quadrilateral whose opposite sides are equal and parallel to each other is called a rectangle.

20. Write the properties of the rectangle.


Here are some features of the following rectangle:

  • Each angle of the rectangle is a right angle.

A=B=C=D=900

  • The opposite sides of a rectangle are equal and parallel.
  • The ears of a rectangle are equal to each other.
  • The two ears of a rectangle bisect each other.
  • AO=BO And CO=DO

Let's  discuss some more formulas.

21. Write the formula for determining the area of ​​a rectangle.

Answer: The formula for determining the area of ​​a rectangle is: length * width.

22. Write the formula for determining the perimeter of a rectangle.

Answer: The formula for determining the perimeter of a rectangle is: length + width.

23. Write the formula for determining the angle of a rectangle.

Answer: The formula for determining the perimeter of a rectangle is: 72a.

24. Area given the triangle of a triangle -

=√{s(s-a)(s-b)(s-c)}

s = semicircle; a, b, c = three arms

25. Given the two sides of a triangle (a, b) and their included angle (θ) area = θ ab sinθ

Circle:

26. Circumference of the circle = 2πr r = radius

26. . Area of ​​the circle = πr²

26. Area of ​​the circle = θπr² / 360

29. The length of the arc is  s = πrθ / 180 °, θ = angle

Quadrilateral

30. Area of ​​rectangle = length x width = ab

31. Scope of rectangle  s = 2 (a + b)

32. The  angle of the rectangle  d = (a² + b²)

 33. Area of ​​a square = a²

34. The perimeter of the square is s = 4a

35. The angle of the square is  d = 2 a

 36. Area of ​​rhombus = ½ (product of two ears)

=½(d1xd2)

36. Area of ​​parallelogram = bh [b = land h = height]

Or

Area = dh [d = angle, h = perpendicular to the angle]

39. Number of angles of a polygon = n (n-3) / 2

40. The sum of the angles of the polygon = (2n-4) right angles

Today we will keep our  geometry  pen so far. I hope  geometry,  geometry  of the formula ,  the geometry of all the sources, to geometry ,  geometry What do you mean  , etc. You have to understand.

Formulas are  used to simplify the work of geometry  . If we understand and know the formulas of geometry  well, then geometry will no longer seem horrible to us.