Across
1
Result of multiplication
4
Closed shape with straight sides
5
Round shape with all points equidistant
7
Collection of distinct elements
8
Number greater than zero
9
Line touching circle at one point
13
Split into equal parts
Down
2
Difference between highest and lowest values
3
Amount of space an object occupies
6
Three-sided polygon
10
Result of raising a number to an exponent
11
Sum divided by count
12
Mathematical statement of equality