character: Angle Ace
topic: Angles and their Relationships
grade: 9
subject: Mathematics
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character: Professor Geometry
topic: Understanding Acute, Obtuse, and Right Angles
grade: 9
subject: Mathematics
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character: Angle Explorer
topic: Complementary and Supplementary Angles
grade: 9
subject: Mathematics
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character: Theorem Wizard
topic: Angle Relationships in Parallel Lines
grade: 9
subject: Mathematics
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