# SOLUTION: How would you solve this? I'm in ninth grade in Geometry 1 Honors: "Find the sum of the first 80 odd integers. Make your own term and value chart. Label the top row, 'number of odd

Algebra ->  Algebra  -> Geometry-proofs -> SOLUTION: How would you solve this? I'm in ninth grade in Geometry 1 Honors: "Find the sum of the first 80 odd integers. Make your own term and value chart. Label the top row, 'number of odd      Log On

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 Geometry: Proofs in Geometry Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Geometry proofs Question 567156: How would you solve this? I'm in ninth grade in Geometry 1 Honors: "Find the sum of the first 80 odd integers. Make your own term and value chart. Label the top row, 'number of odd integers' and the bottom 'Sum'.Answer by richard1234(5390)   (Show Source): You can put this solution on YOUR website!Let S_n be the sum of the first n odd (positive) integers (e.g. S_n = 1+3+...+(2n-1)) n---S_n 1 1 2 4 3 9 4 16 k k^2 80 80^2 = 6400 It can be proved using induction that the sum of the first k odd integers is k^2.