TOPICS
Formulae
Distance Formula :-
1. The distance between P(x₁, y₁) and Q(x₂, y₂) = (x₂-x₁)² + (y₂-y₁)²
2. The distance of a point P(x, y) from the origin = x² + y²
    
Section Formula :-
1. The coordinates of the point P(x, y) which divides the line segment joining the points 
   A(x₁, y₁) and B(x₂, y₂) internally in the ratio m₁ : m₂ are 
    section formula
2. The mid-point of the line segment joining the points P(x₁, y₁) and Q(x₂, y₂) is
    mid formula
    
Area of Triangle :-
1. The area of the triangle formed by the points (x₁, y₁), (x₂, y₂) and (x₃, y₃) = 1/2[x₁(y₂ - y₃) + x₂(y₃ - y₁) + x₃(y₁ - y₂)]
    
Area of Rhombus :-
1. Area of Rhombus = 1/2(product of its diagonals)
    
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