Across
1
Split into equal parts
4
Symbol representing unknown value
5
Result of raising a number to an exponent
6
U-shaped curve of a quadratic function
12
Collection of distinct elements
Down
2
Part of a whole number
3
Three-sided polygon
4
Amount of space an object occupies
7
Total distance around a shape
8
Number greater than zero
9
Longest side of a right triangle
10
Math using letters for unknown values
11
The number representing nothing