Investigation 0-1

Investigation 1-1

Investigation 2-1

Investigation 2-2

Investigation 2-3

Investigation 3-1

Investigation 3-2a

Investigation 3-2b

Investigation 3-3

Investigation 4-1

Investigation 4-2a

Investigation 4-2b

Investigation 5-1a

Investigation 5-1b

Investigation 6-1

Investigation 6-2

Investigation 6-3

Investigation 7-1

Investigation 7-2

Investigation 8-1

Investigation 8-2

Drag the points. What do you notice about the sum of the angles?

Investigation: Ptolemy's theorem

Investigation: Brahmagupta conjecture

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