Across
1
Line crossing from corner to corner
5
Symbol representing unknown value
6
Total distance around a shape
7
Number less than zero
9
Parts per hundred
14
Single numeral from 0 to 9
Down
2
Steepness of a line
3
Mathematical statement of equality
4
Line touching circle at one point
8
Result of raising a number to an exponent
10
Space between two intersecting lines
11
Exact correspondence on both sides
12
Difference between highest and lowest values
13
Part of a line with two endpoints