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  5. Complementary and Supplementary Pairs of Angles

Grade 9 Sri Lanka School Math Complementary and Supplementary Pairs of Angles

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Grade 9
1. Number System
2. Polynomials
3. Geometry
3.1. Introduction to Euclid's Geometry
3.2. Angles and Lines
3.2.1. Understand the Concept of Angles and Terms Related to Angles
3.2.2. Interior and Exterior Points of an Angle
3.2.3. Categorize Angles on the Basis of Their Measures
3.2.4. Angles Around a Point
3.2.5. Complementary and Supplementary Pairs of Angles
3.2.6. Adjacent Angles, Vertically Opposite Angles, and Linear Pair of Angles
3.2.7. Parallel Lines, Transversal, and Angles Formed
3.3. Triangles
3.4. Quadrilaterals and Parallelograms
3.5. Circles
4. Coordinate Geometry
5. Linear Equations in Two Variables
6. Mensuration
7. Statistics and Probability
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