Across
1
Single numeral from 0 to 9
3
Rectangle with four equal sides
4
Part of a circle's circumference
5
Result of multiplication
6
Three-sided polygon
10
U-shaped curve of a quadratic function
11
Sum divided by count
Down
1
Split into equal parts
2
Rectangular array of numbers
3
System of ordered marks for measuring
7
Round shape with all points equidistant
8
Parts per hundred
9
Part of a whole number