text: Program to find equation of a plane passing through 3 points | C program to find equation of a plane passing through given 3 points . ; Function to find equation of plane . ; Driver Code
code: #include <stdio.h> NEW_LINE void equation_plane ( float x1 , float y1 , float z1 , float x2 , float y2 , float z2 , float x3 , float y3 , float z3 ) { float a1 = x2 - x1 ; float b1 = y2 - y1 ; float c1 = z2 - z1 ; float a2 = x3 - x1 ; float b2 = y3 - y1 ; float c2 = z3 - z1 ; float a = b1 * c2 - b2 * c1 ; float b = a2 * c1 - a1 * c2 ; float c = a1 * b2 - b1 * a2 ; float d = ( - a * x1 - b * y1 - c * z1 ) ; printf ( " equation ▁ of ▁ plane ▁ is ▁ % .2f ▁ x ▁ + ▁ % .2f " " ▁ y ▁ + ▁ % .2f ▁ z ▁ + ▁ % .2f ▁ = ▁ 0 . " , a , b , c , d ) ; return ; } int main ( ) { float x1 = -1 ; float y1 = 2 ; float z1 = 1 ; float x2 = 0 ; float y2 = -3 ; float z2 = 2 ; float x3 = 1 ; float y3 = 1 ; float z3 = -4 ; equation_plane ( x1 , y1 , z1 , x2 , y2 , z2 , x3 , y3 , z3 ) ; return 0 ; }