Across
1
Result of raising a number to an exponent
3
Single numeral from 0 to 9
6
System of ordered marks for measuring
7
Number divisible only by 1 and itself
8
Divisible by two
9
Symbol representing unknown value
10
Result of multiplication
Down
2
Round shape with all points equidistant
4
Mathematical rule or equation
5
Total distance around a shape
7
Number greater than zero
11
Longest side of a right triangle
12
Line crossing from corner to corner
13
Space between two intersecting lines