Curriculum
Mathematics — First Preparatory
Unit 1: Numbers
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Unit 2: Algebra
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Unit 3: Statistics
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Unit 4: Geometry
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Text lesson
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Lesson summary
Lesson summary
- The circle represents the whole total, and its angle is 360°.
- Sector angle = (part ÷ total) × 360°, or percentage × 3.6°.
- The angles of all the sectors always add up to 360°.
- The rule can be used in reverse to find the value from a sector angle.
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