Across
1
System of ordered marks for measuring
4
Amount of space an object occupies
7
Result of multiplication
8
Proven mathematical statement
9
Sum divided by count
Down
1
Result of addition
2
Divisible by two
3
Distance from center to edge of circle
5
Difference between highest and lowest values
6
Repeated addition
10
The number representing nothing
11
Result of raising a number to an exponent
12
U-shaped curve of a quadratic function
13
Closed shape with straight sides