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  3. Geometry
  4. Triangles
  5. Properties of a Triangle
  6. Exterior Angle Property of a Triangle
Grade 7
1. Integers
2. Fractions
3. Rational Numbers
4. Decimals
5. Ratio and Proportion
6. Unitary Method
7. Percentage
8. Profit and Loss
9. Simple Interest
10. Exponents
11. Algebraic Expressions
12. Linear Equations in One Variable
13. Mensuration
14. Geometry
14.1. Lines and Angles
14.2. Triangles
14.2.1. Classification of Triangles by the Length of the Sides
14.2.2. Classification of Triangles by the Angles
14.2.3. Properties of a Triangle
14.2.3.1. Angle Sum Property of a Triangle
14.2.3.2. Exterior Angle Property of a Triangle
14.2.3.3. Triangle Inequality
14.2.3.4. Pythagoras' Theorem
14.3. Congruence
15. Reflection and Rotational Symmetry
16. Three-Dimensional Shapes
17. Probability
18. Data Handling

Grade 7 S Korea School Math Exterior Angle Property of a Triangle

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