Geometry

4. the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.
6. If two figures can be placed precisely over each other,
9. a straight one-dimensional figure that does not have a thickness, and it extends endlessly in both directions.
14. the set of all points in the plane that are a fixed distance (the radius) from a fixed point (the centre)
15. a closed 2-D shape, having 4 sides, 4 corners, and 4 right angles (90°).
16. a triangle with all three sides of equal length ,
18. a half-infinite line (also known as a half-line) with one of the two points and. taken to be at infinity.
19. A 2D polygon with five sides and five angles
20. linear dimensions (length, width, height, diameter, perimeter), area, or volume.
21. a particular type of line segment joining two vertices in a polygon, polyhedron, or higher-dimensional polytope.

1. of two rays (half-lines) with a common endpoint.
2. the measure of the size of an object, such as a box, usually given as length, width, and height.
3. a piece or part of a line having two endpoints.
5. a combination of two rays (half-lines) with a common endpoint.
7. lying or moving in the same direction but always the same distance apart.
8. a polygon on the boundary of a polyhedron.
10. a 3-sided polygon sometimes (but not very commonly) called the trigon.
11. a six-sided polygon.
12. location represented by a dot
13. a manifold and an algebraic variety
17. Having curvy or undulating attributes