Geometry

3. an equilateral parallelogram having oblique angles
4. a quadrilateral plane having two parallel and two nonparallel sides
6. Line Segments two line segments which cross to form 90 degree angles
11. Angle a 90 degree angle
12. the line segment between two points on a given curve.
15. a polygon having eight angles and eight sides
16. Triangle a triangle with all sides equal and all angles equal
18. Triangle a triangle having three unequal sides and angles
19. Angle an angle less than 90 degrees but greater than 0 degrees
20. a rectangle having all four sides of equal length
21. a polygon with four sides
22. a quadrilateral having both pairs of opposite sides parallel to each other

1. Line Segments line segments that cross each other
2. a closed plane curve consisting of all points at a given distance from a point within it called the center.
5. a polygon with four sides
7. Line Segments line segments that do not intersect
8. Triangle a triangle with one internal angle equal to 90 degrees
9. a parallelogram having four right angles
10. Curve a curve that is continuous and has endpoints that meet at the same point
13. a straight line extending from the center of a circle or sphere to the circumference or surface
14. the intersection point of two sides of a plane figure
17. a polygon having eight angles and eight sides
23. the part of a straight line considered as originating at a point on the line and as extending in one direction from that point