Across
1
System of ordered marks for measuring
2
Number divisible only by 1 and itself
5
Proven mathematical statement
6
Line segment connecting two circle points
8
Rectangle with four equal sides
10
Comparison of two quantities
11
Divisible by two
12
Steepness of a line
Down
2
Result of raising a number to an exponent
3
Number greater than zero
4
Longest side of a right triangle
7
Sum divided by count
9
Round shape with all points equidistant
13
Mathematical statement of equality