Across
1
Number greater than zero
4
Part of a circle's circumference
5
Line segment connecting two circle points
6
U-shaped curve of a quadratic function
9
Part of a line with two endpoints
Down
1
Closed shape with straight sides
2
Difference between highest and lowest values
3
Round shape with all points equidistant
6
Number divisible only by 1 and itself
7
System of ordered marks for measuring
8
Three-sided polygon
10
Math using letters for unknown values
11
Comparison of two quantities
12
Number with digits after a point