Measure Supplementary Angles

• Use the half circle protractor to measure the angles. 
• Type the angle of the red sector in the red box. 
• Type the angle of the blue sector in the blue box. 
• Press "add angles" to add the angles together.  What should they add up to? 
• Press "drive it" to see the turtle drive along the angle.  Which sector shows the amount of turtle turn, the red one or the blue one? 
• Press "new sectors" to measure a new pair of sectors.

Angles

1. Angles and Fraction Circles
2. Angles and Twelfths
3. Angles and Clock
4. Fraction Circles and Clock
5. Angles and Protractor
6. Supplementary Angles Add Up to 180
7. Half Circle Protractor
8. Measure Supplementary Angles
9. How to Name Angles
10. Supplementary Angle Puzzles
11. Connect the Dots: Angles
12. Complementary Angle Puzzles
13. Angle Bisector Puzzles
14. Vertical Angle Puzzles
15. Triangle Tiling
16. Guess the Angle

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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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