Across
1
Closed shape with straight sides
3
Reference line in a graph
6
Result of raising a number to an exponent
8
Rectangular array of numbers
10
Round shape with all points equidistant
12
Proven mathematical statement
Down
2
Steepness of a line
4
Amount of space an object occupies
5
Part of a whole number
7
Line touching circle at one point
9
Result of addition
11
Number with digits after a point