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## Find a Missing Angle measure in problems involving interior/exterior angles and/or their sums. SPI 0606.4.2

1. Anglemania - (3-5) describe triangles using appropriate geometric vocabulary
2. Anti-Homework - estimate angles from 0 to 180 - correct answers give you a homework grenade to get rid of assignments [gets progressively harder]
3. Basic Geometric Figures - a TAKS worksheet to print and use in class
4. Find the Missing Angle - page 1 of this document gives practice in finding missing angles, pages 2 and 3 go further
5. Find the Third Angle in a Triangle - instruction, practice and a quiz (they call it a game at AAA Math)
6. Find the Fourth Angle in a Quadrilateral - instruction, practice and a quiz (they call it a game at AAA Math)
7. Other Angle Activities at AAA Math
8. How Do We Measure Angles? - six page worksheet to print and use in class
9. Measuring Angles - Practice lining up and reading a protractor while you measure a set of angles in a fun learning activity or
10. Measuring Angles - use a virtual protractor
11. Missing Angles in a Quadrilateral - [designed for 7th grade] how-to-do-it lesson from study zone
12. Missing Angles in a Quadrilateral - Practice - [designed for 7th grade] five multiple-choice questions to practice this skill
13. Triangle Calculator - Enter values three of the six sides and angles of the triangle and the other three values will be computed. The number of significant values entered will determine the number of significant figures in the results.
14. Triangle Explorer - Students learn about areas of triangles and about the Cartesian coordinate system through experimenting with triangles drawn on a grid.
15. Virtual Protractor - ten online activities investigating angles or

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