9 votes 9 votes How many diagonals can be drawn by joining the angular points of an octagon? $14$ $20$ $21$ $28$ Quantitative Aptitude isro2013 quantitative-aptitude geometry + – makhdoom ghaya asked May 13, 2016 makhdoom ghaya 4.9k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
1 votes 1 votes it is 20 ( you can draw and find ) For each vertex have a line with all other vertex ( a direct edge ) so option b Dexter answered May 13, 2016 Dexter comment Share Follow See all 0 reply Please log in or register to add a comment.
1 votes 1 votes for any n vertex polygon no of diagonal=no of total edge -no of sides(non diagonal) =nC2-n=20 abhishek tiwary answered Dec 14, 2017 abhishek tiwary comment Share Follow See all 0 reply Please log in or register to add a comment.
