Supplementary Investigation 30

Inside or Outside?

Tool(s) Geometers Sketchpad

Data File(s) si30

Focus Is point A in the interior of the curve or is it exterior?

Tasks

1. Study the location of point A in si30. How could you determine whether point A is in the interior of the curve? Double click on the Check button to see a demonstration. Describe the strategy used.

2. How else might you determine whether point A is in the interior of the curve?

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