- Circle GeometryInvestigation 0-1Investigation 1-1Investigation 2-1Investigation 2-2Investigation 2-3Investigation 3-1Investigation 3-2aInvestigation 3-2bInvestigation 3-3Investigation 4-1Investigation 4-2aInvestigation 4-2bInvestigation 5-1aInvestigation 5-1bInvestigation 6-1Investigation 6-2Investigation 6-3Investigation 7-1Investigation 7-2Investigation 8-1Investigation 8-2Investigation: Ptolemy's theoremInvestigation: Brahmagupta conjecture
