The rule of three The simple rule of three is the method for determining proportionality.
The simple rule of three is a mathematical method that allows one of the terms of an equation of proportionality to be determined based on the others.
The rule is to calculate the fourth proportional of the proportions:
a / b = c / x
The Rule of Three is a Mathematical Rule that allows you to solve problems based on proportions. By having three numbers: a, b, c, such that, ( a / b = c / x), you can calculate the unknown number
Area of the isosceles triangle Aria = (b * h) / 2
The area is equal to the base (b) multiplied by the height (h) divided by 2
The height is found by Pythagoras' theorem from the right triangle formed when the height falls perpendicular to the base
Area of the rectangle The area is calculated by multiplying the long side by the short side
A = AB x BC
The area can be defined as the amount of space covered by a flat surface of a particular shape.
Area of triangle It is simply half of b times h
Area = 1/2 (b*h)
Area = ½ A B sin C
Bisector theorem In a triangle ABC, the bisector of the angle A determines on the opposite side (BC) segments proportional to the sides of the angle
Circle area If the circle has radius R then the area is π R²
A = πR²
The area of the circle is equal to pi (π) multiplied by the radius squared.
Pythagoras Theorem The Pythagorean equation relates the sides of a right triangle in a simple way, so that if the lengths of any two sides are known the length of the third side can be found. Another corollary of the theorem is that in any right triangle, the hypotenuse is greater than any one of the other sides, but less than their sum.
a2 + b2 = c2
Thales' theorem A parallel to one of the sides of a triangle determines the other two sides, or their extensions, proportional segments.
area of the rectangular parallelepiped The total area of the rectangular parallelepiped is 2 * (area of side ab + area of side ac + area of side bc)
Air side ab = a x b
Air side ac = a x c
Area side bc = b x c
Cube area How is the area of the cube calculated?
The area is calculated: the area of a square (square side - a 2 ) and multiply by 6.
A = 6 * a 2
Volume of the cube How is the volume of the cube calculated?
What is the formula and the figure.
The volume is equal to the area of the base multiplied by the height (square side multiplied by a 2 * a)
V = a * a * a = a 3
Kosinus - Kosinus (x) - Kosinusfunktion The cosine function is defined in a right triangle as the ratio of the adjacent leg to the hypotenuse. The graph of the function is a cosine. The function is defined in the range from -∞ to ∞ and has values between -1 and 1.
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