Across
1
Amount of space an object occupies
5
Round shape with all points equidistant
6
Math using letters for unknown values
7
Part of a line with two endpoints
8
Total distance around a shape
9
Number divisible only by 1 and itself
12
Three-sided polygon
Down
2
Rectangle with four equal sides
3
Number less than zero
4
Middle value in an ordered dataset
8
Result of raising a number to an exponent
10
Parts per hundred
11
Difference between highest and lowest values