0 votes 0 votes Please explain 1)Out of n non current and non-parallel stright lines point of intersection are 2)In a polygon total no of diagonals out of n points Atul Verma12 asked Jan 10, 2017 Atul Verma12 223 views answer comment Share Follow See 1 comment See all 1 1 comment reply Hradesh patel commented Jan 17, 2017 reply Follow Share here in 2nd one: polygon totalno. of diagonal = nC2 - n 0 votes 0 votes Please log in or register to add a comment.