Geometry

3. a point where two or more lines, edges, or rays meet, forming a corner or an angle
4. closed, flat (2D) shape made of three or more straight line segments (sides) connected end-to-end, forming vertices (corners), with no gaps or overlapsArea
7. the longest straight line segment that passes through the center of a circle, connecting two points on its circumference
9. perfectly flat, two-dimensional surface that extends infinitely in all directions, possessing length and width but zero thickness, like an endless tabletop or wall
10. the total distance around the outside of a two-dimensional shape
12. line segment from the center of a circle or sphere to any point on its boundary
13. a straight, one-dimensional figure with no thickness that extends infinitely in both directions

1. a closed, two-dimensional shape made of all the points in a plane that are equidistant from a central point
2. lines, rays, or segments that intersect to form a perfect right angle
5. two lines that are in the same plane and never intersect, no matter how far they are extended
6. four-sided polygon, meaning it's a flat, closed shape with exactly four straight sides, four vertices (corners), and four angles, whose interior angles always sum to 360 degrees.
8. formed by two rays or lines that share a common endpoint, called the vertex
10. A location in space with no size or dimension, meaning it has no length, width, or thickness
11. simple, closed, two-dimensional polygon with three straight sides (edges), three corners (vertices), and three interior angles that always sum to 180 degrees