Across
1
Mathematical statement of equality
5
Steepness of a line
6
Result of addition
8
Proven mathematical statement
9
Comparison of two quantities
10
Middle value in an ordered dataset
12
Parts per hundred
13
System of ordered marks for measuring
Down
2
U-shaped curve of a quadratic function
3
Corner point of a polygon
4
Value that does not change
7
Repeated addition
11
Line touching circle at one point