Basic Figures Vocabulary

2. a region bounded by two radii and an arc lying between the radii
5. the length of a straight line passing through the center of a circle and connecting two points on the circumference
6. coinciding when superimposed
7. the same shape after translation
8. a transformation that turns a figure about a fixed point
9. the shape you get when you rotate a circle around an axis of symmetry
14. angles located on the same side to a transversal when parallel lines are cut by it
15. 90 degree angle
18. the length of a line segment between the center and circumference of a circle or sphere
19. a line that passes through two lines in the same plane at two distinct points
20. the part of a line that connects two points
22. lying in the same plane
23. angles located opposite each other when two lines meet
24. being everywhere equidistant and not intersecting
26. a closed plane figure bounded by straight sides
27. angle between 90 and 180 degrees

1. lying on the same line
3. the length of the closed curve of a circle
4. angles facing each other when two lines are cut by a transversal
10. a quadrilateral whose opposite sides are both parallel and equal in length
11. meet at a point
12. a straight line connecting two points on a curve
13. draw with suitable instruments and under specified conditions
15. a line with a single endpoint (or point of origin) that extends infinitely in one direction
16. change the position of (figures or bodies) in space without rotation
17. having an oblique or slanting direction or position; turn or place at an angle
21. two revolutions of a right angle
24. a flat, two-dimensional surface that extends infinitely far
25. acting in conformity; something (as a cord or rope) that is long and thin and flexible
26. a location with no size, shape, length or depth
27. rounded like an egg