Across
1
Split into equal parts
4
Value that does not change
6
Repeated addition
8
Part of a line with two endpoints
9
Rectangle with four equal sides
Down
1
Single numeral from 0 to 9
2
Lines that never intersect
3
Three-sided polygon
5
System of ordered marks for measuring
7
Longest side of a right triangle
10
Distance from center to edge of circle