Across
1
Amount of space an object occupies
3
Result of raising a number to an exponent
4
Math using letters for unknown values
8
Collection of distinct elements
9
Round shape with all points equidistant
10
Result of addition
12
Three-sided polygon
13
Divisible by two
Down
2
Mathematical rule or equation
3
Number divisible only by 1 and itself
5
Rectangular array of numbers
6
Corner point of a polygon
7
Split into equal parts
11
Part of a line with two endpoints