Across
1
Number less than zero
5
Distance from center to edge of circle
10
Part of a whole number
11
Math using letters for unknown values
Down
2
Value that does not change
3
Part of a line with two endpoints
4
Number divisible only by 1 and itself
6
Line touching circle at one point
7
Space between two intersecting lines
8
Result of raising a number to an exponent
9
Line segment connecting two circle points
12
Exact correspondence on both sides
13
U-shaped curve of a quadratic function