4. Integers

6. Fractions

7. Decimals

10. Unitary Method

13. Mensuration

14. Geometry

14.2. Quadrilateral

14.3. Polygon

14.4. Curve

14.5. Triangles

14.5.1. Introduction to Triangles

14.5.2. Congruent Triangles

14.5.5. Types of Triangles by Angles

14.5.6. Count the Number of Triangles

14.5.7. Angle Sum Property of a Triangle

14.6. Angle

14.8. Types of Lines

14.10. Circle

16. Linear Symmetry

17. Data Handling