Across
1
Proven mathematical statement
2
Result of addition
4
Total distance around a shape
5
Divisible by two
7
Lines that never intersect
8
U-shaped curve of a quadratic function
9
Number divisible only by 1 and itself
Down
2
Steepness of a line
3
Symbol representing unknown value
4
Parts per hundred
6
Part of a line with two endpoints
10
Comparison of two quantities