Problem 15 (2025 AMC 10A)
AMC 10AMedium
From module Right Triangles and Pythagorean Triples
Problem
A regular octagon with sides of length 1 has 20 diagonals. Compute the sum of the squares of the lengths of these diagonals.
From module Right Triangles and Pythagorean Triples
A regular octagon with sides of length 1 has 20 diagonals. Compute the sum of the squares of the lengths of these diagonals.