Across
1
Proven mathematical statement
4
Round shape with all points equidistant
5
Lines that never intersect
6
Rectangular array of numbers
7
Number with digits after a point
9
Symbol representing unknown value
Down
1
Three-sided polygon
2
Mathematical rule or equation
3
Split into equal parts
8
Closed shape with straight sides
10
Longest side of a right triangle
11
Amount of space an object occupies