  Seeing External AnglesThe red sectors around the outside of each polygon make special angles called external angles. External angles are also the angles turned by a turtle when it draws the path of polygon. External angles are usually shown by lines like the ones you see below when you press the "angles" button. |
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Turns and Sectors
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Leone Learning Systems, Inc. (LLS) is a North Shore company that provides online courses for kids anywhere and local teaching and tutoring services for students in Chicago and the Northern Suburbs of Chicagoland. LLS also provides a free geometry software package for children age 6 and up, and free resources for teachers and parents. This site includes information about classes taught, availability for tutoring, learning activities for kids, lesson plans, and an ongoing software and curriculum research and development effort. |
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