Across
1
Single numeral from 0 to 9
2
U-shaped curve of a quadratic function
3
Rectangle with four equal sides
4
Line segment connecting two circle points
7
Collection of distinct elements
10
Power to which a number is raised
12
Number divisible only by 1 and itself
Down
1
Split into equal parts
2
Parts per hundred
5
Reference line in a graph
6
Part of a whole number
8
Result of multiplication
9
Distance from center to edge of circle
11
Result of raising a number to an exponent