### Lesson Details

**Name:**Angles in a Triangle 1**Code:**M.3.7.ANB.5**Specification Reference:**G3**Keywords:**Triangle, total, missing, subtract, add, remaining, degrees.**Objectives:**Investigate the total angles inside a triangle.**Competency:**Investigate the total angles inside a triangle.**Proficiency:**To thus be able to find missing angles in basic triangles.**Mastery:**To apply this to solving problems involving straight lines and points.

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