Across
1
Rectangular array of numbers
4
Three-sided polygon
6
Mathematical statement of equality
12
System of ordered marks for measuring
Down
2
Number with digits after a point
3
Distance from center to edge of circle
5
Part of a whole number
7
Part of a line with two endpoints
8
Line segment connecting two circle points
9
Divisible by two
10
Corner point of a polygon
11
Total distance around a shape