Across
1
Number less than zero
2
Closed shape with straight sides
4
System of ordered marks for measuring
6
Amount of space an object occupies
9
Number with digits after a point
10
Math using letters for unknown values
Down
2
Lines that never intersect
3
Three-sided polygon
4
Collection of distinct elements
5
Split into equal parts
7
Rectangular array of numbers
8
Result of multiplication