Across
1
Steepness of a line
2
Parts per hundred
3
System of ordered marks for measuring
4
Math using letters for unknown values
5
Line touching circle at one point
7
Closed shape with straight sides
Down
2
U-shaped curve of a quadratic function
3
Exact correspondence on both sides
6
Total distance around a shape
8
Part of a whole number
9
Collection of distinct elements
10
Rectangle with four equal sides