Geometry By: Mac

8. either of two angles whose sum is 90°.
11. either of two angles whose sum is 180°.
13. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
16. point where two lines meet or cross
18. a part of a line that is bounded by two distinct end points
19. an angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines.
20. the extent or measurement of a surface or piece of land.

1. an instrument for measuring the extent and characteristics of a person's field of vision.
2. each of the pairs of opposite angles made by two intersecting line
3. An angle that measures more than 90 degrees but less than 180 degrees.
4. a measurable extent of some kind, such as length, breadth, depth, or height.
5. (of angles) having a common vertex and a common side.
6. A line meeting another at a right angle, or 90°
7. a general line
9. the distance around something.
10. a straight line from the center to the circumference of a circle or sphere.
12. the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.
14. An angle that measures less than ninety degrees but more than zero degrees.
15. the sixteenth letter of the Greek alphabet ( Π, π ), transliterated as ‘p.’
17. a statement that the values of two mathematical expressions are equal (indicated by the sign =).