Across
1
Difference between highest and lowest values
2
System of ordered marks for measuring
4
Math using letters for unknown values
5
Power to which a number is raised
6
Closed shape with straight sides
9
Amount of space an object occupies
Down
2
Collection of distinct elements
3
Lines that never intersect
4
Reference line in a graph
5
Mathematical statement of equality
6
Result of raising a number to an exponent
7
Split into equal parts
8
Line crossing from corner to corner