Geometric Shapes

1. 2D Shapes

1.1. Triangle

1.2. Square

1.3. Pentagon

1.4. Hexagon

1.5. Heptagon

1.6. Octagon

1.7. Nonagon

1.8. Decagon

2. Academic Standards Mathematics Grade 3: Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.

3. Quadrilaterals

3.1. Square

3.2. Parallelogram

3.3. Rectangle

3.4. Rhombus

4. Triangles

4.1. Equilateral

4.2. Isosceles

4.3. Scalene