Across
1
Result of addition
2
Sum divided by count
4
Split into equal parts
5
Distance from center to edge of circle
7
Corner point of a polygon
9
Number with digits after a point
12
Mathematical rule or equation
13
Result of multiplication
Down
1
System of ordered marks for measuring
3
Rectangular array of numbers
6
Comparison of two quantities
8
Line crossing from corner to corner
10
Rectangle with four equal sides
11
Exact correspondence on both sides