Across
1
Longest side of a right triangle
3
Rectangular array of numbers
7
System of ordered marks for measuring
10
Number that divides evenly into another
11
The number representing nothing
Down
2
Round shape with all points equidistant
3
Middle value in an ordered dataset
4
Rectangle with four equal sides
5
Line crossing from corner to corner
6
Repeated addition
8
Line segment connecting two circle points
9
Steepness of a line