Geometry

7. Made of a flat surface made up of points. Extends indefinitely in all directions.
10. Measurable part of a line that consists of two end points. This has a definite length.
11. Two angles that have the same measure. The type of angles are also the same.
13. The intersection of two rays at a midpoint. The latter is known as the vertex.
15. Adjacent angles that are supplementary. When combined they form a straight line.
16. Points that lie on the same line. Always three or more points.
17. An angle with a degree measure of 180. An example is at 6 o'clock on a clock.
18. A line or ray that divides an angle into two equal parts. Meets at the incenter.

1. two angles that share a common side. "Next To" each other.
2. Two angles that the measures add up to 90. Form a right angle.
3. Two angles that add up to 180. Forms a straight angle.
4. An angle with a degree less than 90 degrees. An example is 11 o'clock on a clock.
5. Two angles directly across from each other. Always on intersecting lines.
6. An angle with a degree larger than 90 degree. An example is 8 o'clock on a clock.
8. Common end point of an angle. Sides always intersect each other.
9. Location with no size or shape. Shown by a dot.
10. Made up of points with no thickness or width. One dimensional figure that extends endlessly.
11. Points that lie on the same plane. They can be any two intersecting lines.
12. A line that extends indefinitely in one direction. Impossible to measure its length.
14. Angle that measures 90 degrees. This is the same shape as complimentary.