Across
1
Space between two intersecting lines
4
Line touching circle at one point
5
Three-sided polygon
6
Visual representation of data
7
Mathematical rule or equation
11
Parts per hundred
12
Rectangle with four equal sides
13
Number with digits after a point
Down
2
System of ordered marks for measuring
3
U-shaped curve of a quadratic function
8
Math using letters for unknown values
9
Mathematical statement of equality
10
Total distance around a shape