1. Type of shape:
1.1. Geometric
1.1.1. Come from mathematical formulas.
1.1.1.1. Ellipse
1.1.1.1.1. plane curve surrounding two focal points
1.1.1.2. Heptagon
1.1.1.2.1. seven equal length sides and seven interior angles of 128
1.1.1.3. Hexagon
1.1.1.3.1. six equal length sides and six interior angles of 120
1.1.1.4. Square
1.1.1.4.1. four equal length sides and four equal interior angles of 90
1.1.1.5. Circle
1.1.1.5.1. round plane figure whose boundaryconsists of points equidistant from a fixed point
1.1.1.6. Triangle
1.1.1.6.1. three equal length sides and three equal interior angles of 60
1.1.1.7. Pentagon
1.1.1.7.1. five equal length sides and five interior angles of 108
1.1.1.8. Decagon
1.1.1.8.1. ten equal length sides and ten interior angles of 144
1.1.1.9. Octagon
1.1.1.9.1. eight equal length sides and eight interior angles of 135
1.1.1.10. Nonagon
1.1.1.10.1. nine equal length sides and nine interior angles of 140
1.1.1.11. Oval
1.1.1.11.1. closed curve in a plane which resembles the outline of an egg
1.1.1.12. Rhombus
1.1.1.12.1. quadrilateral whose four sides all have the same length
1.1.1.13. Scalene triangle
1.1.1.13.1. triangle that has three unequal sides
1.1.1.14. Right triangle
1.1.1.14.1. triangle in which one angle is a right angle
1.1.1.15. Parallelogram
1.1.1.15.1. four-sided object that has parallel opposite sides
1.1.1.16. Trapezoid
1.1.1.16.1. two adjacent right angles
1.1.1.17. Trapezium
1.1.1.17.1. two parallel sides and the other two sides are non-parallel
1.1.1.18. Kite
1.1.1.18.1. two diagonals are at right angles to each other
1.1.1.19. Crescent
1.1.1.19.1. the shape of the visible part of the moon when it is less than half full
1.1.1.20. Quatrefoil
1.1.1.20.1. flower with four petals
1.1.1.21. Curvilinear triangle
1.1.1.21.1. curved triangle with constant width
1.1.1.22. Heart
1.1.1.22.1. similar to a triangle, rather broad at the superior surface and tapering to the apex
1.2. Organic
1.2.1. Irregular and uneven.
2. Shape angle:
2.1. In geometry, a shape can be defined as different physical form.
3. Terms and definition:
3.1. Angle
3.1.1. Space in the corner where two lines meet.
3.2. Circular
3.2.1. Rounded shape that looks like a circle.
3.3. Curved
3.3.1. A continuously bending line, without angles. Its rounded shape.
3.4. Diagonal
3.4.1. Extended from one corner to the opposite corner.
3.5. Rectangular
3.5.1. Four sided shape shape like rectangle.