मराठी

Foundation of Coordinate Geometry

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Estimated time: 2 minutes
Maharashtra State Board: Class 12

Formula: Foundation of Coordinate Geometry

Sr. No. Name Condition Formula
i. Distance Formula Two points P(x₁, y₁), Q(x₂, y₂) \[\mathrm{d(PQ)}=\sqrt{\left(x_{2}-x_{1}\right)^{2}+\left(y_{2}-y_{1}\right)^{2}}\]
a. Internal Division P divides AB in the ratio m: n \[\mathrm{P\equiv\left(\frac{mx_{2}+nx_{1}}{m+n},\frac{my_{2}+ny_{1}}{m+n}\right)}\]
b. Midpoint Formula P is the midpoint of AB \[\mathrm{P}\equiv\left(\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2}\right)\]
c. External Division P divides AB externally in m: n \[\mathrm{P\equiv\left(\frac{mx_{2}-nx_{1}}{m-n},\frac{my_{2}-ny_{1}}{m-n}\right)}\]
iii. Centroid Formula Triangle with vertices A, B, C \[\left(\frac{x_1+x_2+x_3}{3},\frac{y_1+y_2+y_3}{3}\right)\]
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