Across
1
Reference line in a graph
3
Mathematical statement of equality
4
Longest side of a right triangle
9
Number greater than zero
10
Distance from center to edge of circle
11
Amount of space an object occupies
Down
1
Space between two intersecting lines
2
Result of addition
5
Line segment connecting two circle points
6
Symbol representing unknown value
7
Closed shape with straight sides
8
Collection of distinct elements
9
Parts per hundred