Across
1
Repeated addition
3
Part of a circle's circumference
7
Divisible by two
9
Math using letters for unknown values
10
Collection of distinct elements
11
Result of raising a number to an exponent
13
Rectangle with four equal sides
14
U-shaped curve of a quadratic function
15
Part of a line with two endpoints
Down
2
Mathematical rule or equation
4
Part of a whole number
5
Value that does not change
6
Symbol representing unknown value
8
Steepness of a line
12
Line segment connecting two circle points