Geometry By: Mac

5. a part of a line that is bounded by two distinct end points
7. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
8. a general line
9. a statement that the values of two mathematical expressions are equal (indicated by the sign =).
12. a measurable extent of some kind, such as length, breadth, depth, or height.
14. a straight line from the center to the circumference of a circle or sphere.
15. A line meeting another at a right angle, or 90°
16. the extent or measurement of a surface or piece of land.
17. each of the pairs of opposite angles made by two intersecting line
18. an angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines.
19. An angle that measures more than 90 degrees but less than 180 degrees.

1. an instrument for measuring the extent and characteristics of a person's field of vision.
2. the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.
3. either of two angles whose sum is 90°.
4. point where two lines meet or cross
6. the distance around something.
10. (of angles) having a common vertex and a common side.
11. the sixteenth letter of the Greek alphabet ( Π, π ), transliterated as ‘p.’
13. either of two angles whose sum is 180°.
16. An angle that measures less than ninety degrees but more than zero degrees.