Geometry

3. an angle greater than 90 degrees but less than 180 degrees
4. a polygon with four sides
8. a rectangle having all four sides of equal length
11. a straight line extending from the center of a circle or sphere to the circumference or surface
12. a 90 degree angle
15. a continuous extent of length
16. a triangle having three unequal sides and angles
20. a triangle with all sides equal and all angles equal
21. a polygon having eight angles and eight sides
22. the part of a straight line considered as originating at a point on the line and as extending in one direction from that point
23. a quadrilateral plane figure having two parallel and two nonparallel sides
25. the intersection point of two sides of a plane figure
27. line segments that cross each other
28. line segments that do not intersect
29. a position in space

1. a parallelogram having four right angles
2. a curve that is continuous and has endpoints that meet at the same point
5. a triangle with one internal angle equal to 90 degrees
6. Segments two line segments which cross to form 90 degree angles
7. a triangle which has two sides equal
9. an angle less than 90 degrees but greater than 0 degrees
10. a closed plane curve consisting of all points at a given distance from a point within it called the center
13. one part of a line
14. a polygon with 5 sides and 5 angles
17. a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end
18. the line segment between two points on a given curve
19. an equilateral parallelogram having oblique angles
24. a quadrilateral having both pairs of opposite sides parallel to each other
26. a polygon having six sides and six anglesDiameter