Across
1
Number with digits after a point
2
Result of multiplication
3
Exact correspondence on both sides
8
U-shaped curve of a quadratic function
10
Line touching circle at one point
11
Rectangular array of numbers
Down
1
Single numeral from 0 to 9
2
Closed shape with straight sides
3
System of ordered marks for measuring
4
Result of addition
5
Round shape with all points equidistant
6
Number divisible only by 1 and itself
7
Split into equal parts
9
Repeated addition
12
Part of a circle's circumference