Across
1
Comparison of two quantities
4
Math using letters for unknown values
5
Longest side of a right triangle
Down
2
Line segment connecting two circle points
3
Part of a whole number
6
Space between two intersecting lines
7
Closed shape with straight sides
8
Corner point of a polygon
9
Steepness of a line
10
Three-sided polygon
11
Value that does not change
12
Divisible by two