SA crossword

4. The least measurable distance between the base and the top of a geometric figure
6. Grandfather of the science.
10. It is the unit of measuring angles.
12. The neighborhood of any number a is the open interval containing the number.
13. Is defined as a point where the graph intersects the y-axis.
15. It is a branch of pure mathematics that uses alphabets and letters as variables.
17. Smooth, uniform
18. It is a spiral shape curve in three dimensional space.

1. The limit within which set of values reside. For example, the...of the function y = x2 is [0, ∞] or {y|y ≥ o}
2. Means making an angle of 90º
3. Geometrical figure with five angels
5. A number that indicates the shape of a curve. It is represented by the small letter 'e' (This e is in no ways related to the exponential e = 2.718).
7. The X-coordinate of a point on the coordinate system is called...
8. A quadrilateral with one pair of parallel sides is called...
9. Geometrical figure with three angels
11. The study of geometric figures in two and three dimensions
14. The reference point of any graph indicated by (0,0) in 2-D and (0,0,0) in 3-D
16. The person who found "Eulers Formula"