Across
1
Divisible by two
4
Number that divides evenly into another
8
U-shaped curve of a quadratic function
9
Part of a circle's circumference
10
Number less than zero
11
Amount of space an object occupies
Down
2
Number divisible only by 1 and itself
3
Split into equal parts
5
System of ordered marks for measuring
6
Repeated addition
7
Symbol representing unknown value
12
Lines that never intersect
13
Visual representation of data