Maths Topics
作者：Mary Casey
1. Graphs
1.1. Bar Graphs
1.2. Pie Charts
1.3. Pictograms
2. Angles
2.1. Obtuse
2.2. Right
2.3. Reflex
2.4. Straight
3. Lines
3.1. Horizontal
3.2. Vertical
3.3. Parallel
3.4. Diagonal
3.5. Perpendicular
4. Length
4.1. metres
4.2. centimetres
4.3. millimetres
4.4. kilometres
