Across
- 4. each of a group of numbers used to indicate the position of a point, line, or plane.
- 5. the horizontal (x) axis
- 6. the intersection of the three medians, average of the three vertices
- 8. a part of a figure cut off by a line or plane intersecting it.
- 9. a straight line at an angle of 90° to a given line, plane, or surface.
Down
- 1. the plane figure enclosed by two radii of a circle and the arc between them.
- 2. a numerical or constant quantity placed before and multiplying the variable in an algebraic expression
- 3. a quarter of an area
- 7. a plane figure with at least three straight sides and angles, and typically five or more.