Across
1
Split into equal parts
4
Corner point of a polygon
5
Value that does not change
10
Distance from center to edge of circle
11
Single numeral from 0 to 9
12
Number that divides evenly into another
13
Line touching circle at one point
14
Three-sided polygon
15
Comparison of two quantities
Down
2
System of ordered marks for measuring
3
Symbol representing unknown value
6
Mathematical statement of equality
7
Proven mathematical statement
8
Visual representation of data
9
Rectangular array of numbers