Across
1
Proven mathematical statement
2
Steepness of a line
5
Result of multiplication
6
Lines that never intersect
7
Amount of space an object occupies
9
Single numeral from 0 to 9
Down
2
Exact correspondence on both sides
3
Math using letters for unknown values
4
Mathematical rule or equation
5
Number divisible only by 1 and itself
8
Total distance around a shape