Across
1
Exact correspondence on both sides
2
Part of a whole number
5
Space between two intersecting lines
6
Math using letters for unknown values
7
Part of a line with two endpoints
9
Reference line in a graph
Down
1
System of ordered marks for measuring
2
Mathematical rule or equation
3
Corner point of a polygon
4
Three-sided polygon
8
U-shaped curve of a quadratic function
10
Number that divides evenly into another
11
Line segment connecting two circle points