4. Integers
6. Fractions
7. Decimals
10. Unitary Method
13. Mensuration
14. Geometry
14.3. Types of Lines
14.4. Intersecting Lines
14.4.1. Identifying the Type of Line
14.4.3. Angle
14.4.4. Triangles
14.4.5. Curve
14.4.5.1. Straight and Curved Lines
14.4.5.2. Open Curve
14.5. Closed Curve
16. Linear Symmetry
17. Data Handling