Geomerty

4. the act of changing in form or shape or appearance
6. a specific identifiable position in a continuum or series
9. an area that is in the middle of some larger region
14. a triangle with two equal sides
15. an angle less than 90 degrees but more than 0 degrees
17. a plane curve with every point equidistant from the center
19. a triangle whose interior angles are all acute
21. a point equidistant from the ends of a line or the extremities of a figure

1. corresponding in character or kind
2. the length of the closed curve of a circle
3. two angles whose sum is a right angle
5. the 90 degree angle between two perpendicular lines
7. a quadrilateral whose opposite sides are parallel and equal
8. an angle between 90 and 180 degrees
10. either of two equal and opposite angles formed by the intersection of two straight lines
11. a polygon with four equal sides and four right angles
12. the space between two lines or planes that intersect
13. parallelogram with four equal sides
16. a three-sided polygon
18. being everywhere equidistant and not intersecting
20. in or near an inner area