Across
1
Reference line in a graph
4
Number divisible only by 1 and itself
5
Number less than zero
6
Result of raising a number to an exponent
9
Distance from center to edge of circle
12
Sum divided by count
Down
2
Part of a line with two endpoints
3
System of ordered marks for measuring
6
Number greater than zero
7
Proven mathematical statement
8
Total distance around a shape
10
Comparison of two quantities
11
Line touching circle at one point
13
Split into equal parts