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18
geometry
18
mathematics education
16
triangles
13
reviews
12
mathematical theorems
12
mathematics
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10
vertices
9
notes
9
parallelograms
9
polygons
8
hexagons
6
mathematical functions
5
mathematics instruction
5
rectangles
4
circles
4
education
4
geometric concepts
4
mathematical duality
4
mathematical logic
4
perpendicular lines
4
ratios
4
rhombuses
3
algebra
3
dynamic geometry
3
generalization
3
mathematical constants
3
parallel lines
3
physical sciences
3
problem solving
3
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