Across
1
Three-sided polygon
5
Repeated addition
6
Number greater than zero
9
System of ordered marks for measuring
13
Rectangular array of numbers
14
Number with digits after a point
Down
2
Space between two intersecting lines
3
Number that divides evenly into another
4
Amount of space an object occupies
7
Longest side of a right triangle
8
Result of multiplication
10
Steepness of a line
11
Result of addition
12
Lines that never intersect