Across
1
Mathematical rule or equation
4
Number divisible only by 1 and itself
5
Line segment connecting two circle points
6
Split into equal parts
7
Distance from center to edge of circle
9
Comparison of two quantities
Down
2
Math using letters for unknown values
3
Result of multiplication
4
U-shaped curve of a quadratic function
8
Single numeral from 0 to 9
10
Total distance around a shape