Across
1
System of ordered marks for measuring
5
Three-sided polygon
6
Sum divided by count
7
The number representing nothing
10
Result of multiplication
Down
2
Visual representation of data
3
Number greater than zero
4
Rectangle with four equal sides
8
Divisible by two
9
Round shape with all points equidistant
10
Lines that never intersect
11
U-shaped curve of a quadratic function