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## Three Dimensional Geometry Formulas for Class 11 Maths Chapter 12

Are you looking for Three Dimensional Geometry formulas for class 11 Chapter 12? Today, we are going to share Three Dimensional Geometry formulas for class 11 Chapter 12 according to student requirements. You are not a single student who is searching Three Dimensional Geometry formulas for class 11 Chapter 12. According to me, thousands of students are searching Three Dimensional Geometry formulas for class 11 Chapter 12 per month. If you have any doubt or issue related to Three Dimensional Geometry formulas then you can easily connect with through social media for discussion. Three Dimensional Geometry formulas will very helpful to understand the concept and questions of the chapter Three Dimensional Geometry. I would like to suggest you remember Three Dimensional Geometry formulas for the whole life. It also helps you with higher studies.

1. The distance of two points P(x1, y1, z1) and Q(x2, y2, z2) is:
$$PQ=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}$$
2. The coordinates of a point R that divides the line segment joined by two points P(x1, y1, z1) and Q(x2, y2, z2) internally as well as externally in the ratio m : n is given by:
$$\left ( \frac{mx_2+nx_1}{m+n},\frac{my_2+ny_1}{m+n},\frac{mz_2+nz_1}{m+n} \right )\:and\:\left ( \frac{mx_2-nx_1}{m-n},\frac{my_2-ny_1}{m-n},\frac{mz_2-nz_1}{m-n} \right )$$;
3. The coordinates of the mid-point of a given line segment joined by two points P(x1, y1, z1) and Q(x2, y2, z2) are $$\left ( \frac{x_1+x_2}{2},\frac{y_1+y_2}{2},\frac{z_1+z_2}{2} \right )$$
4. The coordinates of the centroid of a given triangle with vertices (x1, y1, z1), (x2, y2, z2) and (x3, y3, z3) are $$\left ( \frac{x_1+x_2+x_3}{3},\frac{y_1+y_2+y_3}{3},\frac{z_1+z_2+z_3}{3} \right )$$

#### Summary Three Dimensional Geometry Formulas

We have listed top important formulas for Three Dimensional Geometry for class 11 Chapter 12 which helps support to solve questions related to chapter Three Dimensional Geometry. I would like to say that after remembering the Three Dimensional Geometry formulas you can start the questions and answers the solution of the Three Dimensional Geometry chapter. If you faced any problem to find a solution of Three Dimensional Geometry questions, please let me know through commenting or mail.

#### NCERT Solutions Class 11 Maths by Chapters

• Chapter 1 Sets
• Chapter 2 Relations and Functions
• Chapter 3 Trigonometric Functions
• Chapter 4 Principle of Mathematical Induction
• Chapter 5 Complex Numbers and Quadratic Equations
• Chapter 6 Linear Inequalities
• Chapter 7 Permutations and Combinations
• Chapter 8 Binomial Theorem
• Chapter 9 Sequences and Series
• Chapter 10 Straight lines
• Chapter 11 Conic Sections
• Chapter 12 Introduction to Three Dimensional Geometry
• Chapter 13 Limits and Derivatives
• Chapter 14 Mathematical Reasoning
• Chapter 15 Statistics
• Chapter 16 Probability