2. Integers
3. Fractions
4. Decimals
7. Percentage
10. Exponents
13. Mensuration
14. Geometry
14.1. Lines and Angles
14.2. Triangles
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
17. Probability
18. Data Handling