Across
1
Number less than zero
5
Part of a line with two endpoints
7
Parts per hundred
9
Comparison of two quantities
10
Number greater than zero
11
Mathematical rule or equation
12
U-shaped curve of a quadratic function
Down
2
Result of raising a number to an exponent
3
Single numeral from 0 to 9
4
Three-sided polygon
5
Collection of distinct elements
6
Math using letters for unknown values
8
Divisible by two