Geometry By: Mac

3. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
8. the sixteenth letter of the Greek alphabet ( Π, π ), transliterated as ‘p.’
9. an instrument for measuring the extent and characteristics of a person's field of vision.
13. An angle that measures more than 90 degrees but less than 180 degrees.
14. either of two angles whose sum is 90°.
15. the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.
16. point where two lines meet or cross
19. either of two angles whose sum is 180°.
20. a general line

1. a straight line from the center to the circumference of a circle or sphere.
2. a measurable extent of some kind, such as length, breadth, depth, or height.
4. an angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines.
5. the extent or measurement of a surface or piece of land.
6. a part of a line that is bounded by two distinct end points
7. the distance around something.
10. An angle that measures less than ninety degrees but more than zero degrees.
11. A line meeting another at a right angle, or 90°
12. each of the pairs of opposite angles made by two intersecting line
17. a statement that the values of two mathematical expressions are equal (indicated by the sign =).
18. (of angles) having a common vertex and a common side.